Signal box prefix codes

A (hopefully) comprehensive listing

'Boxes beginning B

Last update 4 October 2025

Additional information is always gratefully received, whether entirely new records (particularly historical records) or information to fill in gaps or correct errors, via the contact link under the Miscellaneous entry in the navigation bar above. Thank you.

Please select a starting letter from the links below:

Code Signal Box Note ELRMileage Opened Closed Control to
B Babworth ECM1139m 13ch 16 May 1892 24 April 1976 Retford (RD)
B Backworth BNE≈2m 00ch 16 November 1958 Newsham South (N)
D Down line automatic signals
U Up line automatic signals
BM Badminton Code used from late-1960s SWB99m 77ch 1 January 1903 8 May 1971 Bristol (B)
DB Down Badminton line automatic signals
BL Baglan Loop SWM2205m 00ch 1912 28 March 1965 Port Talbot (PT)
BF Baguley Fold Junction MVL12m 39ch 1890 6 June 2022 Manchester Rail Operating Centre (MN)
B Balby Junction ECM1155m 11ch August 1878 9 July 1978 Decoy No 1 (DY)
BA
CJ Balcombe VTB333m 68ch 1864 6 October 1963 Balcombe Tunnel Junction (CK)
CK Balcombe Tunnel Junction VTB331m 58ch 1909 22 October 1978 Three Bridges (CL)
BT Balderton ECM1116m 71ch 8 August 1872 9 July 1977 Doncaster (D)
B Baldock SBR35m 50ch 17 July 1892 22 November 1975 Hitchin (HT)
DC Balham VTB14m 77ch 12 October 1952 7 June 1981 Victoria Signalling Centre (VC)
BH Balloch Code used from opening BCH20m 42ch 4 April 1960 24 April 1988 Yoker (YD)
B Balne Downgraded to gate box 22 March 1970: up line controlled by Shaftholme (SH), down line controlled by Brayton (BN) (later Doncaster (D)) ECM2165m 70ch 1957 25 April 2015 Doncaster (D)
BB Bamber Bridge Gate box: line controlled by Preston (PN). Believed code not carried FHR42m 33ch 1906
B Banavie Code not carried MLG20m 26ch 14 June 1987
AG Arisaig points indicators. Code not carried
AN Annat points indicators. Code not carried
AL Ardlui points indicators. Code not carried
AR Arrochar & Tarbet points indicators. Code not carried
BO Bridge Of Orchy points indicators. Code not carried
CL Crianlarich points indicators. Code not carried
CO Connel Ferry points indicators. Code not carried
CR Corrour points indicators. Code not carried
DM Dalmally points indicators. Code not carried
FL Fillan points indicators. Code not carried (no points present)
GD Glen Douglas points indicators. Code not carried
GF Glenfinnan points indicators. Code not carried
GH Garelochhead points indicators. Code not carried
GT Gorton points indicators. Code not carried
LC Lower Crianlarich points indicators. Code not carried
LE Loch Eil Outward Bound notices. Code not carried
MG Mallaig points indicators. Code not carried
OB Oban points indicators. Code not carried
RB Roy Bridge notices. Code not carried
RN Rannoch points indicators. Code not carried
SP Spean Bridge points indicators. Code not carried
TL Tyndrum Lower notices. Code not carried
TL Tulloch points indicators. Code not carried
TY Taynuilt points indicators. Code not carried
UT Upper Tyndrum points indicators. Code not carried
BD Banbury Depot DCL 8 August 2016
BN Banbury North DCL86m 26ch October 1899 8 August 2016 West Midlands Signalling Centre (OL)
RS Banbury Reservoir Sidings Code allocated to points only, not carried on signals DCL 8 August 2016
BS Banbury South DCL86m 02ch September 1908 8 August 2016 West Midlands Signalling Centre (NA, OL)
DM Down main line automatic signals
UM Up main line automatic signals
BR Bangor Named Bangor No 2 to 7 December 1968 CNH3239m 02ch 1923
B Bank DRN≈1m 43ch 11 July 1898 12 July 1993 Waterloo [Waterloo & City] [new] (WK)
A Automatic signals
PB Barassie Local Signalling Panel See Paisley Barassie interlocking AYR433m 03ch 29 November 1982 25 May 1986 Paisley [new] (PB) (local control still possible)
B Code used to 25 May 1986
B Barassie South Junction AYR433m 05ch 1891 29 November 1982 Barassie Local Signalling Panel (B)
Barcroft Gate box: line controlled by Doncaster (D) ECM2162m 15ch 11 April 2015 Doncaster (D)
BH Bardon Hill KSL111m 24ch 1899
also had draw-ahead signals in Bagworth colliery lettered A to E with no number
BM Bardon Mill Mainly switched out from at least 1972 NEC232m 41ch 1874 15 September 2019 Haydon Bridge (HB)
BL Bare Lane MSM0m 57ch 1937 9 December 2012 Preston (PN)
BD Bargoed 'Box relocated from Cymmer CAR18m 07ch 9 November 1970 6 September 2013 South Wales Control Centre (CF)
B Code carried on 'box, not carried on signals
BK Barking FSS27m 42ch TAH413m 62ch 27 March 1961 17 April 1995 Upminster IECC (UR)
D Down line automatic signals
DM Down main line automatic signals
DG Down goods line automatic signals
U Up line automatic signals
BE Barking East Built on foundations of 1908 'box (burnt down) FSS27m 62ch 1919 20 March 1961 Barking (BK)
BS Barking Station FSS2 Barking (BK)?
BW Barking West FSS27m 35ch 20 March 1961 Barking (BK)
BE Barkston East Junction ABE20m 39ch 13 March 1882 3 October 2005 Allington (AL)
BS Barkston South Junction ECM1109m 56ch 21 May 1876 29 April 1972 Grantham (G)
D Down line automatic signals
Barlaston CMD224m 48ch 4 May 1985 18 May 2002✖last train; official closure 25 May 2002 Stoke on Trent Signalling Centre (SOT)
B Barlby Downgraded to gate box 2 October 1972: line controlled by Selby Panel (S) HUL130m 34ch 1898
BN Barlby North Code used from 11 June 1967 HUL1 22 October 1972 Selby Panel (S)
D Down line automatic signals
Barming SBJ37m 43ch 1874 24 April 1982 Maidstone East (EBX)
B Barnby Replaced by structure on opposite side of line ECM1119m 03ch 10 November 1871 9 July 1977 Barnby [new] (BY)
BY Code used by early 1977
BY Barnby [new] Downgraded to gate box 2 February 1980: line controlled by Doncaster (D) ECM1119m 03ch 11 July 1977 17 August 1997 Claypole (CL)
BM Barnby Moor & Sutton ECM1141m 53ch 1901 18 October 1975 Ranskill (RL)
WBO Barnes HOU7m 25ch 22 February 1959 4 January 1997 Wimbledon (W)
BE Barnetby East MAC394m 64ch 1914 30 December 2015 York Rail Operating Centre (BC)
BH Barnham TBH222m 35ch 18 July 1911 11 November 2008✖delayed from 6 May 2008 Barnham [new] (BH)
CBY Original code
BH Barnham [new] TBH222m 46ch 11 November 2008✖delayed from 6 May 2008
BH Barnhill Code used from 2002 SCM519m 69ch ≈1874
BY Barnsley PED26m 59ch 13 April 1998
Barnsley Exchange Junction See Barnsley Station Junction
BJ Barnsley Junction MAC229m 03ch 1887 2 January 1981 Line closed
DJ Code shown in 1970s weekly notice in error
BY Barnsley Station Junction Named Barnsley Exchange Junction to 25 September 1972 BAH252m 58ch 1901 10 April 1998 Barnsley (BY)
BSJ Unclear if code carried
BD Barrhead GBK6m 70ch 1894 late on 28 October 2022✖last train; official closure 31 October 2022 West Of Scotland Signalling Centre (GB)
BR Barrhill Code used from 2002 STR212m 35ch 1935
BF Barrow in Furness Code used from 2008 CBC129m 05ch 1907
BR Barrow Road Downgraded to gate box 24 June 1981: line controlled by Oxmarsh Crossing (OX) BAR106m 55ch 1885
B Barry BRY8m 07ch 3 August 1896 30 June 2014 South Wales Control Centre (CF)
DB Down Barry line automatic signals
UB Up Barry line automatic signals
B Barry Island BRY8m 63ch 5 May 1929 16 March 1998 Barry (B)
Barry West Downgraded to gate box 30 July 1995: line controlled by Carnoustie (CA) ECN38m 60ch 1908 9 February 1997 Carnoustie (CA)
BH Barton Hill YMS11m 49ch 1936
BM Barton Moss Burnt down 19 September 1990 DSE25m 50ch April 1915 6 October 1990 Eccles (E)
Barton Road Level Crossing See Thornton Abbey
Baschurch WSJ2179m 14ch 1884 28 March 1999 Crewe Junction [Shrewsbury] (CJ)
BH Basford Hall Junction LEC4156m 22ch 1897 3 January 2025 Manchester Rail Operating Centre (CS)
Basingstoke [Great Western] See Basingstoke C
YW Basingstoke A Named Basingstoke East to 27 May 1956 BML147m 46ch 27 May 1906 20 November 1966 Basingstoke [panel] (YW)
WA Automatic signals
RWA Distant to automatic signals
Basingstoke Area Signalling Centre See Basingstoke Signalling Control Centre
C Basingstoke C [Great Western] Named Basingstoke to 27 May 1956 Code displayed on 'box. Uncertain if used (or intended for use) on signals BKE51m 17ch 1892 20 November 1966 Basingstoke [panel] (YW)
Basingstoke East See Basingstoke A
YW Basingstoke [panel] ('Basingstoke Old') BML147m 41ch 20 November 1966 2 April 2010 Basingstoke Signalling Control Centre (BE)
DWA Automatic signals reading to YWD signals
RWA Repeaters to automatic signals
YWD Semi-automatic signals controlled from Ground Frame D
YWF Semi-automatic signals controlled from Ground Frame F
WA Automatic signals
BEF Basingstoke Rail Operating Centre Feltham area signals BML1≈47m 04ch 7 April 2021
BEP Petersfield area signals. Code used from November 2025
BE Basingstoke Signalling Control Centre ('Basingstoke New') Also called Basingstoke Area Signalling Centre BML147m 55ch 16 April 2007
BEF Feltham area signals. Code used from January 2019
PW Poole to Wool section. Code used from 19 May 2014
SE Salisbury to Exeter section. Code used from 12 March 2012
EBU Bat & Ball Named Sevenoaks Bat & Ball to 5 June 1950 Code used from 11 March 1962 OJS25m 50ch ≈1877 22 November 1981 Sevenoaks (NE)
B Bates Staithes [Newsham] ISC≈2m 00ch
BH Bathampton Junction Code used from 24 August 1969 BFB0m 00ch MLN1104m 46ch 21 September 1956 15 August 1970 Bristol (B)
DM Down main line automatic signals
DT Down Trowbridge line automatic signals
UM Up main line automatic signals
UM Bath Goods Up main line automatic signals MLN1107m 31ch 30 April 1911 15 August 1970 Bristol (B)
BL Bathley Lane Gate box ECM1122m 78ch 2 March 1930 3 February 1980 Doncaster (D)
B Batley Named Lady Anne Crossing to 17 April 1996 Demolished 10 March 2025 MDL135m 57ch 1878 20 June 2023 York Rail Operating Centre (SL)
D Down line automatic signals
LA Code used to 17 April 1966
U Up line automatic signals
B Batley Uncertain whether code carried MDL1 16 April 1966 Batley (B)
Battersby MBW110m 54ch MBW212m 10ch by 1887 or 1902? 20 August 1989 Nunthorpe (N)
HC Battersea Park Junction VTB11m 21ch 1906 7 October 1979 Victoria Central (VC)
BP Battersea Pier A Named Battersea Pier Junction to February 1925 VTB10m 77ch 1906 4 June 1939 Victoria Central (VC)
Battersea Pier Junction See Battersea Pier A
EDN Battle TTH55m 46ch ≈1885 22 March 1986 Bo Peep Junction (BJ)
B Bawtry ECM1147m 60ch 1912 19 October 1975 Ranskill (RL)
U Up direction automatic signals
B Bayford Code probably not carried HDB16m 71ch ≈2 June 1910 3 September 1972 Kings Cross (K)
BH Bay Horse CGJ6≈15m 12ch 26 November 1972 Preston (PN)
B Beaconsfield Formerly named Beaconsfield East Code used by 1952 NAJ211m 29ch 1905 7 December 1975 Marylebone (ME)
Beaconsfield East See Beaconsfield
B Beal Code used from 10 April 1960 ECM758m 52ch 18 April 1982 Tweedmouth (T)
D Down direction automatic signals
U Up direction automatic signals
BJ Bearley West Junction HSA12m 58ch TSB17m 61ch 1907 by 30 October 2010✖demolished; official closure 1 November 2010 West Midlands Signalling Centre (HS, TB)
Bearsted SBJ42m 59ch 1 July 1884 14 April 1984 Maidstone East (ME)
B Beattock Temporary panel WCM149m 51ch 16 January 1972 29 April 1973 Motherwell (MC)
EG Beckenham Junction VIR8m 41ch 12 April 1959 13 February 1983 Victoria Signalling Centre (VS)
A Automatic signals
B Beckingham Panel fitted 4 December 1977 SPD4100m 77ch 6 July 1876
BC Becontree FSS2≈9m 18ch 27 March 1961 Upminster (UM)
Bedale Downgraded to gate box 5 February 1985, upgraded again 8 April 1990. Line closed, 'box 'closed' on reopening REB27m 42ch 1875 4 April 1996
CW Bedford Cauldwell Depot SPC1≈49m 00ch 8 August 2004
Bedford North Junction SPC1 25 November 1978 2 November 1980 West Hampstead (WH)
BD Bedford St Johns BBM15m 74ch 1977 6 September 2004 Marston Vale (MV)
LW Bedhampton Crossing Downgraded to gate box 28 January 1968 WPH238m 08ch 1879 3 June 1979 Havant (KW)
BC Bedlam Crossing Also known as Bedlam Gates Crossing CNN3m 40ch 13 November 1988 Three Spires Junction (TS)
Bedlam Gates Crossing See Bedlam Crossing
BN Bedlington North EJM15m 71ch 1912 5 April 2024 Tyneside Rail Operating Centre (BA)
BS Bedlington South Downgraded to gate box 5 April 2024; line controlled by Tyneside Rail Operating Centre (BA) EJM15m 59ch
BA Benton to Ashington section (shown on Northumberland Line development plans; control to Tyneside Rail Operating Centre instead)
Bedminster MLN1119m 11ch 30 April 1932 5 April 1970 Bristol (B)
BN Bedwyn BHL66m 29ch 1897 11 September 1978 Reading (R)
S Beechbrook Farm [CTRL construction depot] Stop boards 4 June 2001 Site closed
Beer Ferris Also known as Bere Ferrers DAC≈222m 65ch by 1900 27 October 1968 Plymouth (P)
BC Beeston Castle & Tarporley CNH1168m 60ch 1915
B Beeston Junction DOL1≈182m 35ch 20 August 1967 Leeds (L)
D Down line automatic signals
U Up line automatic signals
BN Beeston North Junction TSN1≈124m 55ch 19 December 1969 Trent (TT)
BNR Repeater signals
BJ Beighton Junction CHR≈155m 48ch 16 May 1982 Sheffield (S)
BN Code in use in 1974
BX Beighton Station Junction BEW47m 41ch 1890 22 March 2021 York Rail Operating Centre (WN)
BL Belasis Lane POC11m 04ch 1929 10 February 2021 York Rail Operating Centre (NS)
BD Belford Code used from 1962 ECM751m 45ch 25 February 1962 7 July 1990 Tweedmouth (TW)
B Unclear if code used
D Down line automatic signals
U Up line automatic signals
BL Bellgrove Code used from opening NEM20m 66ch 22 May 1960 28 July 1991 Yoker (YS)
BLR Banner repeater signals
Y Bellingham CAT8m 73ch 1 March 1942 17 January 1982 Victoria Signalling Centre (VS)
A Automatic signals
BL Bell Lane SPC5 27 September 1891 29 June 1986 Leicester (LR)
BJ Bellside Junction Code used from 1973 EGS23m 57ch 29 June 1981 Motherwell (M)
BJ Bellwater Junction Code not carried on all signals GRS3118m 55ch 12 June 1913
BO Belmont Downgraded to gate box (1967?): line controlled by Starbeck (SS) HAY117m 69ch 1914
B
BV Belvedere Downgraded to gate box 1970 NKL12m 72ch 24 June 1956 25 January 1981 Dartford (D)
BR Benar Fawr Ground Frame DJP105m 04ch Machynlleth (MH)
D Beningbrough Down line automatic and semi-automatic signals. Code used by 1963 ECM5≈7m 01ch ≈3 November 1963 York [PSB] (Y)
U Up line automatic and semi-automatic signals. Code used by 1963
BC Bentley Colliery ECM1158m 57ch February 1905 26 October 1980 Doncaster (D)
BY Code used by 1970
also had draw-ahead signals lettered A to D with no number
BC Bentley Crossing Code probably used from 1949 DOL1157m 52ch 1891 7 December 1980✖delayed from 7 July 1979 Doncaster (D)
BH Bentley Heath Downgraded to gate box 30 August 1969: line controlled by Saltley (SY) DCL119m 44ch 1932 18 February 2008 West Midlands Signalling Centre (LJ)
U Bentley Junction Up direction automatic signals LTN163m 23ch 1880 30 June 1975 Manningtree (M)
B Bentley Junction DOW1m 04ch HJB3m 24ch 1909 17 February 1980✖delayed from 7 July 1979 Doncaster (D)
BJ
B Benton Some signals also had suffix X, the meaning of which is unclear ECM74m 26ch 1 March 1964 by 21 April 1991 Tyneside (T)
D Down direction automatic signals (until 1979)
DC Down direction automatic signals
R Banner repeater signals
U Up direction automatic signals
BB Benton Bank ECM7≈2m 60ch 5 September 1964 Heaton (H)
Bere Ferrers See Beer Ferris
BL Berkswell✖A shunt frame was closed and replaced by a new one nearby on 15 July 1979: unclear whether original frame refers to this 'box or another Downgraded to gate box 2 July 1966 RBS1≈99m 30ch ≈1880s 24 May 2004 Coventry (CY)
BLR Repeater signals
BK Berwick KJE315m 56ch 1879 late on 13 February 2015✖delayed from 22 November 2013 Three Bridges Rail Operating Centre (TEB)
Bescar Lane WBS330m 78ch 25 July 1970 Bescar Lane [temporary]
Bescar Lane [temporary In station building WBS330m 77ch 26 July 1970 15 August 1970? Bescar Lane [reopened]
Bescar Lane [reopened] WBS330m 78ch 16 August 1970? 9 May 1993✖delayed from 18 April 1993 Burscough Bridge (BB)
BC Bescot Curve Junction Unclear if code carried DPJ≈4m 73ch Walsall (WL)
BD Bescot Depot PBJ8m 20ch
DT Bescot Down Tower PBJ8m 20ch 1965 27 August 2013 West Midlands Signalling Centre (SB)
BT Reported but believed in error for DT
DTH Hump shunting signals
DTX Set back signals. Code used from 12 March 1989
FTX Set back signals
Bescot Up Hump PBJ8m 20ch 1963 Walsall (WL)
SB Bescot Yard Stop boards
BP Bestwood Park Junction RAC130m 06ch 1951 29 September 2001 Trent (TT)
BW Betchworth RSJ27m 14ch 12 April 1934 5 June 1983 Reigate (RG)
BG Bethnal Green LTN11m 19ch 30 January 1949 24 March 1989 Liverpool Street [new] (L)
DF Down fast line automatic signals
DM Down main line automatic signals
DS Down suburban line automatic signals
R Repeater signals
UF Up fast line automatic signals
US Up slow line automatic signals
BG Bethnal Green East Junction LTN11m 19ch ≈April 1891 29 January 1949 Bethnal Green (BG)
DF Down fast line automatic signals
DS Down suburban line automatic signals
UF Up fast line automatic signals
US Up suburban line automatic signals
BR Betley Road LEC4153m 13ch 1875 4 May 2004 Stoke on Trent Signalling Centre (SC)
BH Betteshanger Colliery Upgraded from ground frame 10 January 1962. Disused from 1989 BME289m 11ch 1923 25 April 2009 Deal (EBZ)
B Bevercotes Colliery BEC≈4m 60ch
also had draw-ahead signals lettered A to E with no number
BS Beverley Formerly named Beverley South HBS8m 16ch 1911
B Code replaced by BS
Beverley South See Beverley
CCW Bexhill Named Bexhill Central to ≈1971 Closed, reopened 21 December 1998 WJB29m 61ch 27 March 1877 late on 13 February 2015✖delayed from 22 November 2013 Three Bridges Rail Operating Centre (TEB)
D Distant signals
DCCW Distant signals
Bexhill Central See Bexhill
Bicester See Bicester London Road
B Bicester London Road Formerly named Bicester No 1, sometimes referred to as Bicester OXD19m 31ch by 1883 1 June 1986 Oxford (OX)
BE Bicester East Depot Ground Frame OXD19m 71ch 2016?
Bicester No 1 See Bicester London Road
Bicester No 2 OXD19m 72ch 9 November 1941 29 October 1973 Bicester London Road (B)
BW Bicester West Depot Ground Frame OXD20m 20ch 2016?
Bidston Dee Junction CWK34m 78ch WDB30m 09ch 1936 18 September 1994 Merseyrail (ML)
BE Bidston East Junction BEN4m 40ch CWK24m 40ch CWK34m 40ch 1937 10 September 1994 Merseyrail (ML)
B Biggleswade ECM138m 52ch 21 January 1901 16 January 1977 Kings Cross (K)
B Billingham on Tees LEN363m 59ch 1904 6 February 2021✖last train; demolished 7 February 2021, official closure 10 February 2021 York Rail Operating Centre (NS)
BT Billingshurst TBH144m 73ch ≈1868 17 March 2014✖delayed from 25 October 2013 Three Bridges [new] (T)
BS Bilton Siding RTS≈0m 65ch August 1985? Rugby (RY)
BM Bingham NOG1119m 58ch 1875 30 November 2015 East Midlands Control Centre (GN)
B Bingley Station TJC3209m 07ch 1932 22 October 1994 Leeds (L)
PS Birchills Power Sidings Downgraded to shunt frame 4 June 1967 12 May 1980 Line closed
DE Birchington on Sea VIR70m 52ch 17 July 1968 Westgate on Sea (FE)
A Automatic signals
Birkdale HXS317m 26ch 1905 11 March 1994 Merseyrail (ML)
BC Birkenhead Central MIR22m 34ch 1886 10 September 1994 Merseyrail (ML)
BCR Banner repeater signals
E Code shown on 1934 plan
S Birkenhead North Depot Stop boards. Code in use by 24 June 2024 (when new boards installed)
BN1 Birkenhead North No 1 A resignalling notice quotes both BN and BN1 for 'Birkenhead North'. Whether BN2 was ever used is unclear CWK24m 22ch 1888 10 September 1994 Merseyrail (ML)
BN Birkenhead North No 2 A resignalling notice quotes both BN and BN1 for 'Birkenhead North'. Whether BN2 was ever used is unclear CWK23m 78ch 1888 10 September 1994 Merseyrail (ML)
BP Birkenhead Park CWK2? 1938 28 February 1988 Birkenhead North No 2 (BN)
H Code shown on 1934 plan, still in use 1977
NS Birmingham New Street RBS20m 16ch 10 January 1966 In phases from at least 27 August 2013 last train 24 December 2022 West Midlands Signalling Centre (AW, BW, CB, GS, PA, SB, SP, WP)
RNS Repeater signals
AW Birmingham Rail Operating Centre Named West Midlands Signalling Centre to 20 October 2024 Aston to Wichnor section. Code used from 27 December 2017 DBP340m 38ch 29 August 2007
BA Barnt Green to Ashchurch section. Code used from 7 November 2016
BB Birmingham to Barnt Green and Redditch section. Code used from 7 November 2016
BM Birmingham to [unknown] section installed at New Street
BP Bescot Junction to Pleck Junction section. Code used from 27 August 2013
BW Birmingham New Street to Wolverhampton section. Code used from 5 May 2015
CB Coventry to Birmingham section
CN Coventry to Nuneaton section
DR Droitwich to Ryecroft Junction section. Code used from 28 August 2012
GS Galton to Smethwick section. Code used from 3 January 2018
HS Hatton to Stratford section
LC Leamington Spa to Coventry section
LJ Leamington Spa to Jewellery Quarter section
LL Landor Street to Lifford section. Code used from 10 April 2012
LN Former Leamington signals. Code used from 8 August 2016
MJ Former Madeley Junction signals. Code used from 18 November 2012
NA Northolt to Aynho section. Code used from 8 August 2016
NW Nuneaton to Whitacre section. Code used from 28 November 2011
OL Oxford to Leamington section. Code used from 8 August 2016
OS Oxley to Shrewsbury section. Code used from 5 May 2015
PA Proof House to Aston section. Code used from 27 December 2017
PC Portobello Junction to Wolverhampton Crane Street section. Code used from 5 May 2015
PD Pleck Junction to Darlaston Junction section. Code used from 27 August 2013
RC Rugby to Coventry section
RR Rugeley to Ryecroft Junction section. Code used from 27 August 2013
SB Stechford to Bushbury Junction section. Code used from 27 August 2013
SG St Andrews to Grand Junction section. Code used from 10 April 2012
SJ Former Stourbridge Junction signals. Code used from 28 August 2012
SP Soho to Perry Barr section. Code used from 3 January 2018
TB Tyseley to Bearley Junction section
WB Worcester to Bromsgrove section. Code used from 7 November 2016
WM Used between Birmingham Moor St and Jewellery Quarter
WM Wilmcote to Stratford-upon-Avon section. Code used from 1 November 2010
WP Water Orton to Proof House Junction section. Code used from 10 April 2012
WR Water Orton to Ryecroft Junction section. Code used from 10 April 2012
WS Wolverhampton to Stafford section. Code used from 5 May 2015
WW Wichnor to Water Orton section. Code used from 28 November 2011
B Birmingham [Snow Hill] DCL129m 24ch 11 September 1960 6 March 1972 Line closed. Controlled by Saltley (SY) on reopening
SH Code used from 1968
B Birmingham Snow Hill North DCL129m 43ch 31 October 1909 11 September 1960 Birmingham [Snow Hill] (SH)
B Birmingham Snow Hill South DCL129m 21ch August 1903 11 September 1960 Birmingham [Snow Hill] (SH)
BE Bishop Auckland East DAE2 24 March 1984 Shildon (S)
A Distant signals
D Down line automatic signals
U Up line automatic signals
BM Bishop Middleham STF≈9m 40ch 30 April 1984 Ferryhill (F)
BGS Bishopsgate South LTN1 ≈1882 11 September 1949 Liverpool Street (L)
US Up suburban line automatic signals
BS Bishops Stortford BGK30m 22ch 1931 24 October 2003✖last train; official closure 29 October 2003 Liverpool Street (L) [new]
D Down line automatic signals
RBS Repeaters to controlled signals
Bishton Downgraded to gate box 17 April 1961: line controlled by Newport (N) SWM2153m 00ch 7 February 1941
BB Black Bank EMP75m 23ch 1883 14 May 1988 Chettisham (CH)
BB Blackboy Lane Crossing TBH230m 25ch Chichester (CC)
DBB Distant signal. Code probably not carried
KSD Blackburn King Street depot BBS4 2017
BC Black Carr Junction ECM1153m 14ch 4 December 1875 21 August 1977 Decoy No 1 (DY)
BK Blackford Code used from 2002 SCM4133m 28ch 26 June 1933
J Blackfriars HHH0m 62ch 11 August 1946 14 February 1982 Victoria Signalling Centre (VS)
A Automatic signals
B Blackfriars Junction Code used to ≈1927 HHH0m 64ch 21 March 1926 2 June 1941 Blackfriars Junction [temporary panel] (BJ)
BJ Code used from ≈1927
BJ Blackfriars Junction [temporary panel] HHH≈0m 62ch 2 June 1941 11 August 1946 Blackfriars (J)
B Blackhall Rocks LEN3≈76m 69ch 6 April 1981 Horden (H)
U Up line automatic signals
N Blackheath A Named Blackheath B to 30 June 1929 BEX6m 68ch by 1895 15 March 1970 St Johns (L)
EDG Blackheath B Named Blackheath C to 30 June 1929 Code used from 1961? BEX7m 13ch ≈1 May 1895 15 March 1970 St Johns (L)
EOG Code reported in error November 1961
Blackheath B See Blackheath A
Blackheath C See Blackheath B
Black Lion Building condemned as unsafe 1989 Abercynon (A)
BL Black Lion Gates Renamed Black Lion? Code used by 14 April 1957 CAM19m 41ch 1895 7 February 1971 Black Lion?
BLR Distant signals
B Blackmoor Crossing MAC230m 31ch ≈1875 16 May 1983 Line closed
BC
BN Blackpool North No 1 Permanently switched out from 30 April 2007. An RSSB report quotes a BP-prefixed signal for 'Blackpool North' without specifying to which 'box it applies. It is believed that this code was not carried PBN16m 79ch 1959 24 January 2011 Blackpool North No 2 (BN2)
BN1 Believed code used but not carried
BN2 Blackpool North No 2 Demolished 14 November 2017. An RSSB report quotes a BP-prefixed signal for 'Blackpool North' without specifying to which 'box it applies. It is believed that this code was not carried PBN17m 30ch 1896 early on 11 November 2017✖last train; official closure 26 March 2018 Manchester Rail Operating Centre (BL)
BP2 Code reported in official documentation October 2009
BJ Blackrod Junction MVE217m 27ch 1879 9 February 2013✖delayed from 21 January 2013 Manchester Piccadilly (MP)
BE Blackwell East Junction NHT10m 31ch NHT2137m 24ch Trent (TT)
BA Blair Atholl Named Blair Atholl South to 25 August 1968 Code used from 1978 HGL235m 05ch 1890
Blair Atholl South See Blair Atholl
BN Blakedown Dismantled 2013 to rebuild on new (non-railway) site OWW138m 51ch 1888 28 August 2012 West Midlands Signalling Centre (DR)
BY Blankney Also known as Metheringham SPD272m 79ch 1929 4 April 2014✖delayed from 23 September 2013 Lincoln Control Centre (SL)
B Blaydon NEC15m 22ch
BN
D Down line automatic signals
R Banner repeater signals
RD Banner repeaters to down line automatic signals
CC Had a signal numbered 33/CC/23, the full meaning of which is unclear
BM Blea Moor SAC248m 39ch 1941
BP Blenkinsop NEC2≈40m 19ch 22 February 1987 Haltwhistle (HW)
BY Bletchley LEC146m 46ch 28 June 1965 31 December 2012✖closure took place in stages beginning 7 June 2004 Rugby Signalling Control Centre (KR/TK)
BYR Repeater signals
B Blindwells ECM8≈10m 61ch Sidings closed
BH Blisworth Shunt Frame LEC1≈62m 74ch 25 September 1983 5 September 2004 Rugby (RY)
BT Blotoft Named Blotoft Sidings to ≈1986 Code carried by colour light but not semaphore signals SPD155m 26ch 24 February 1882 11 August 2014✖delayed from 30 December 2013 Lincoln Control Centre (WS)
BS Code used by 12 November 1978
Blotoft Sidings See Blotoft
BH Bloxwich RRN12m 07ch February 1959 27 August 2013 West Midlands Signalling Centre (RR)
BHR Repeater signals
BHX Set back signals
BRR Code believed reported in error
Blue House Crossing See Motspur Park
R Blyth B [Power] Station At least one signal 3 September 1967
H
BR Bognor Regis BBR25m 51ch 29 May 1938
BC Boldon Colliery Code used from May 1985. Damaged by fire 21 April 2000, reopened 4 June 2000 LEN395m 19ch 1893 11 January 2002 Tyneside (T)
B Code used by 1982
BY Code used from 15 November 1970
BL Bollo Lane Junction BOK52m 64ch 1878 4 June 2012 Acton Wells Junction (AW)
BN Bolton On site of Bolton East MVE110m 31ch 8 December 1985 14 January 1990✖delayed from 29 April 1989 Manchester Piccadilly (MP)
BP Bolton Percy NOC10m 77ch 1904 13 March 1983 York [PSB] (Y)
B Bo'ness Junction EGM127m 05ch 30 April 1933 12 March 1979 Polmont (PB)
B Bootham YMS1m 51ch 30 April 1989 Strensall (S)
Boothferry Road See Goole
BE Bootle (Cumbria) CBC153m 37ch 1874
BJ Bootle Junction HXS32m 33ch 13 April 1986 Bootle Junction [new] (BJ)
BJ Bootle Junction [new] HXS32m 34ch 13 April 1986 11 March 1994 Merseyrail (ML)
BJ Bo Peep Junction Code used from 1986 TTH60m 65ch WJB32m 72ch ≈1912
EDK Code used to 1986
BS Bordesley South DCL127m 62ch 30 November 1913 30 August 1969 Saltley (SY)
BY Bordesley Down Yard Ground Frame DCL127m 71ch
B Boroughbridge Road Code used from 1939 LLP242m 22ch 10 June 1979 Low Gates (LB)
BR Code used by 1973
BG Borough Green Named Wrotham to 18 June 1962 SBJ29m 47ch 1874 9 December 1983 Maidstone East (ME)
D Borough Market Junction XTD1m 60ch 27 June 1926 15 April 1976 London Bridge (L)
BH Borth Capel Soar Ground Frame SBA287m 59ch Machynlleth (MH)
Bosham TBH231m 49ch 1904 14 November 1992✖delayed from 26 September 1992 Chichester (CC)
Boston Dock Swing Bridge No ELR? ≈1887
WS Boston West Street Junction GRS3107m 13ch 1874
BT Botley ETF78m 59ch 1873 20 June 1982 Eastleigh [new] (E)
BW Bottesford West Junction NOG1113m 78ch May 1876 30 November 2015 East Midlands Control Centre (GN)
B Code reported but possibly not carried
BC Boughton Crossing NMH≈3m 00ch
BJ Boughton Junction HIM20m 15ch 26 October 1961 22 July 1984 Ollerton Colliery (OC)
BC Boultham Crossing NOB131m 17ch 19 April 1925 19 March 1988 West Holmes (WH)
BG Bounds Green HDB5m 30ch 1889 14 September 1974 Wood Green (WG)
B
BG Bounds Green Carriage Sidings Ground Frame HDB5m 35ch 14 December 1975 Bounds Green South End (BG)?
BG Bounds Green South End ECM15m 05ch 12 December 1994✖delayed from 4 November 1994
BE Bourne End Ground switch panel WBB28m 50ch 11 February 2008
WFB Bournemouth Named Bournemouth Central to 1973 BML2108m 10ch 8 July 1928 15 December 2003 Bournemouth [new] (BC)
RWA Distant to automatic signals
WA Automatic signals
BC Bournemouth [new] BML2108m 10ch 15 December 2003
Bournemouth Carriage Sidings Named Bournemouth West Junction to 12 December 1965 when downgraded to ground frame BBD90m 68ch 5 March 1888 1 March 2009 Bournemouth West Carriage Sidings (BW)
Bournemouth Central See Bournemouth
BW Bournemouth West Carriage Sidings Stop boards BBD 2 March 2009
DP Depot building protection signals
B Bowesfield DSN210m 75ch 1905 11 March 2019 York Rail Operating Centre (B)
Bowesfield Junction Controlled a signal labelled F with no number 3 June 1928? 22 March 1969? Bowesfield (B)?
B Bow Junction GFB3m 39ch LTN12m 69ch 24 July 1949 8 April 1996 Liverpool Street (L)
BJ
DE Down electric line automatic signals
DM Down main line automatic signals
RB Banner repeater signals
U Up line automatic signals
UE Up electric line automatic signals
UM Up main line automatic signals
BW Bowling Code used from 1959 NEM512m 72ch 25 October 1959 22 February 1992 Yoker (YD)
BJ Bowling Junction MRB39m 22ch 5 August 1979 Mill Lane Junction (M)
B
EP Bow Road CDT≈0m 30ch
BP Terminal LC [Grangemouth] GMH3m 68ch 1970
BZ Brabazon Crossing AFR113m 27ch 26 April 1992 4 April 1993 Bristol (B)
BN Bracknell RDG132m 34ch ≈1876 27 January 1974 Wokingham (WM)
BFS Bradford Forster Square SBF208m 40ch 1890 21 October 1984 Shipley Bradford Junction (BR)
B Code used at closure
BJ Bradford Junctions WEY104m 23ch 2 May 1933 17 March 1990 Westbury [new] (W)
DT Down Trowbridge line automatic signals
UB Up branch line automatic signals. Code used from 1969
UT Up Trowbridge line automatic signals
Bradford On Avon BFB7m 01ch 1877 31 July 1966 Bradford Junctions (BJ)
B Bradley Junction MVL3≈28m 41ch Healey Mills (HM)
BS Bradwell Sidings CMD216m 29ch 1889 18 May 2002✖last train; official closure 27 May 2002 Stoke on Trent Signalling Centre (SOT)
X Set back signals
B Braidhurst SCM190m 25ch 17 December 1972 Motherwell (M)
WBC Bramley BKE46m 38ch 1917 23 October 1977 Basingstoke [panel] (YW)
RWA Repeaters to automatic signals
WA Automatic signals
B Bramley LBE13m 22ch 27 April 1924 6 July 1969 Leeds (L)
D Down line automatic signals
U Up line automatic signals
BF Brampton Fell NEC250m 10ch 1918
B Brancliffe East Junction Code used from December 1979 MAC353m 57ch 1905 29 November 1997 Worksop (WP)
B Brandon Code used by 1980 ETN86m 25ch 1931 20 August 2012✖delayed from 25 June 2012 Cambridge (EN)
BB Brandy Bridge Code used by 14 April 1957 CAM23m 67ch 27 November 1967 Abercynon (AB)
BBR Distant signals
WBZ Branksome BML2110m 46ch 14 December 1886 15 December 2003 Bournemouth [new] (BC)
BY Bransty Code used from 2008 CBC174m 73ch CBC20m 16ch 1899
BN Brayton Downgraded to gate box 7 May 1973 TCW1173m 02ch 6 March 1988 Selby Panel (S)
N BREL North Ground Frame Opening date uncertain, certainly open by then ECM1 16 September 1979
Brent Knoll MLN1142m 39ch 6 August 1891 29 January 1972 Bristol (B)
BS Brent Sidings LEC16m 41ch 13 July 1996 Willesden PSB (WN)
B Brentwood LTN118m 16ch 29 October 1933 9 January 1972 Shenfield (S)
DL Down local line automatic signals
DT Down through line automatic signals
UL Up local line automatic signals
UM Up main line automatic signals
UT Up through line automatic signals
BS Brereton Sidings RRN213m 25ch 1908 27 August 2013 West Midlands Signalling Centre (RR)
B Unclear if code carried on signals
Brewery Sidings MPR11m 59ch 1894 15 September 1998 Manchester North (MN)
F Bricklayers Arms Junction LBW2m 16ch 8 October 1950 20 July 1975 London Bridge (L)
A Automatic signals
BJ Bridge Junction ECM1155m 38ch 1 May 1878 7 July 1979 Doncaster (D)
BC Bridgeton Central Code used from 8 February 1960 BGN0m 77ch 1912 30 October 1988 Yoker (YF) in part; Line closed remainder
B
Bridgwater MLN1151m 29ch 26 June 1932 18 March 1972 Bristol (B)
BN Bridlington Named Bridlington South to 9 February 1998 Code used from renaming HBS30m 58ch 1875
B Code shown on signalling plan
BS Code used when named Bridlington South
BQ Bridlington Quay HBS31m 06ch 1911 7 February 1998 Bridlington (BN)
Bridlington South See Bridlington
BD Brierfield Downgraded to gate box 7 December 1986: line controlled by Preston (PN) GJC24m 17ch 1876 29 September 2014✖delayed from 31 March 2014 Preston (PN)
B Brigg MAC391m 23ch 1885
D Brighouse Down line automatic signals thought that up line indicates to Elland MVN2≈34m 36ch 31 May 1970 Elland (E)
CB Brighton VTB350m 37ch 16 October 1932 30 March 1985 Three Bridges [new] (T)
L Brighton Lovers Walk Depot VTB349m 74ch 1985
BN Carriage shed
BIY Code used from February 2006
B Brightside TJC2161m 16ch 25 April 1965 18 March 1973 Sheffield (S)
D Down line automatic signals
U Up line automatic signals. Unclear whether code exists
BD Brimsdown BGK10m 66ch 1944 27 August 2002 Liverpool Street (L)
D Down line automatic signals
U Up line automatic signals
BW Brinklow LEC2≈88m 00ch 12 September 1964 Rugby (RY), Nuneaton (NN)
RY Temporary code until taken over by Rugby (RY)
RY Brinnington Temporary 'box jointly controlling two Romiley Junction signals TTA1180m 18ch 26 October 1986 ? Romiley Junction (RY)
B Bristol MLN1118m 26ch 7 March 1970 4 January 2010 in part South Wales Control Centre (NT) in part
BD Down direction automatic signals on up Badminton line
BU Up direction automatic signals on down Badminton line
DA Down Avonmouth line automatic signals
DB Down Badminton line automatic signals
DB Down Bristol line automatic signals
DC Down Charfield line automatic signals
DF Down Filton line automatic signals
DFM Down Filton main line automatic signals
DFR Down Filton relief line automatic signals
DM Down main line automatic signals
DT Down Trowbridge line automatic signals
DT Down Tunnel line automatic signals
MD Down direction automatic signals on up main line
MU Up direction automatic signals on down main line
UA Up Avonmouth line automatic signals
UB Up Badminton line automatic signals
UC Up Charfield line automatic signals
UF Up Filton line automatic signals
UFM Up Filton main line automatic signals
UFR Up Filton relief line automatic signals
UM Up main line automatic signals
UT Up Trowbridge line automatic signals
UT Up Tunnel line automatic signals
V Code reported in 1980 notice, thought to be typing error for 'B'
Bristol East MLN1118m 05ch 29 November 1935 7 March 1970 Bristol (B)
Bristol East Depot Down Yard MLN1117m 21ch ≈1889 18 July 1970 Bristol (B)
ED Bristol East Depot Main Line Box moved to Hungerford 1972 MLN1116m 77ch 11 January 1960 18 July 1970 Bristol (B)
Bristol Loco Yard MLN1118m 38ch 9 December 1934 15 March 1970 Bristol (B)
PM Bristol St Philips Marsh BRL0m 42ch (April?) 1893 18 July 1970 Bristol (B)
Bristol St Philips Marsh Depot See St Philips Marsh Depot
Bristol West MLN1118m 51ch 26 May 1935 12 April 1970 Bristol (B)
Bristol West Depot MLN1120m 68ch 1906 4 December 1971 Bristol (B)
B British Steel Scunthorpe
BG Broad Green DSE≈3m 47ch 13 December 1970 Huyton (HN)
BH Broadwath Ground Box Code probably not carried on signals NEC2≈54m 61ch Corby Gates (CG)
BH Brockenhurst Named Brockenhurst A to 19 October 1978 when new panel installed Code used from renaming BML292m 57ch 22 November 1964
WDV Code used to 19 October 1978
RWA Repeaters to automatic signals. Code used to 19 October 1978
WA Automatic signals. Code used to 19 October 1978
Brockenhurst A See Brockenhurst
B Brocklesby MAC399m 33ch 1914 30 December 2015 York Rail Operating Centre (B)
BJ Unclear if code used
Q Brockley Lane Code used from 30 June 1929 NTL6m 37ch 7 March 1973 Nunhead (R)
Brodsworth Colliery Had draw-ahead signals lettered A to D with no number
BD Bromfield SHL25m 20ch 1873 Wales Rail Operating Centre (NS) (planned)
BB Bromford Bridge DBP338m 43ch 23 August 1969 Saltley (SY)
B Bromley By Bow FSS13m 12ch 1 May 1961? Fenchurch Street (F)
BC Bromley Cross Downgraded to gate box 14 January 1990: line controlled by Manchester Piccadilly (MP) BBB13m 47ch 1875
Z Bromley North BNG10m 36ch 25 January 1959 4 November 1976 London Bridge (L)
B Brompton LEN3≈44m 57ch October 1966 Low Gates (LG)
D Down line automatic signals
U Up line automatic signals
BS Bromsgrove South BAG255m 61ch ≈1922 21 April 1969 Gloucester (G)
Brook Hall Road Gate box HXS35m 69ch 1885 11 March 1994 Merseyrail (ML)
BR Brookhouse Colliery MAC3 29 March 1987 Woodhouse Junction (WH)
RW Brookwood BML128m 00ch 7 July 1907 5 June 1966 Woking (WV)
B Broomfleet HUL114m 33ch 19 May 1904 23 November 2018✖last train; official closure 26 November 2018, delayed from 3 April 2018 York Rail Operating Centre (GH)
WDF Broom Gates Downgraded to gate box 10 June 1967 BAE2141m 13ch 1875 20 August 1967 Chard Junction (C)
Broomhill see Elsecar Junction (E)
BE Brough East HUL110m 24ch 28 February 1904 23 November 2018✖last train; official closure 26 November 2018, delayed from 3 April 2018 York Rail Operating Centre (GH)
B Unclear whether code used
BN Broxbourne BGK17m 24ch 10 July 1960 27 May 2003 Liverpool Street (L)
D Down line automatic signals
U Up line automatic signals
BJ Broxbourne Junction Code used from 31 January 1960 BGK18m 37ch 4 November 1951 31 January 1982 Liverpool Street (L)
U Up line automatic signals. Code used from 31 January 1960
Brundall Gate box: line controlled by Brundall Junction (BL) NOL5m 62ch 17 February 2020? Colchester [new] (YL)
BL Brundall Junction NOL5m 73ch 1883 17 February 2020 Colchester [new] (YL)
Bryn y Gwynon Gate box SWM2185m 09ch by 1884 ≈9 August 1993 Port Talbot (PT)
Buckland Crossing Gate box VIR49m 16ch ≈1880 7 December 1997 Faversham (EY)
S Buildwas Power Station Control Room Sometimes also known as Ironbridge Power Station MJI2159m 60ch January 1969? 28 November 2015✖last train Line closed
D1 Departure line 1 signals
D2 Departure line 2 signals
ES Unloading hopper signals
BW Bullfield West MVE2≈11m 15ch 20 January 1990✖delayed from 28 April 1989 Manchester Piccadilly (MP)
B Bullhouse Colliery MAC125m 77ch by 1880 14 October 1973 Thurlstone Crossing (T)
BPE Bullo Pill East SWM2125m 69ch (June?) 1873 2 June 1969 Gloucester (G)
CF Burgess Hill VTB341m 46ch 7 November 1926 31 August 1963 Keymer Crossing (CG)
CA Automatic signals
BHX Burneside Higher Crossing Gate Box: line controlled by Carlisle (CE) OXW3m 64ch
B Burngullow Formerly Burngullow West MLN3288m 56ch 1895 4 October 1986 Par (PR)
Burngullow West See Burngullow
Burn Lane Gate box: line controlled by Selby West (S). Demolished 1-8 February 2014 TCW1170m 70ch 28 November 1971 25 January 2014 Selby Panel (S)
BC Burnley Central GJC 7 December 1986 Preston (PN)
B Burnmouth ECM851m 60ch 25 January 1893 31 March 1968 Edinburgh (EG)
R Banner repeater signals
BS Burrows Sidings Code used by 20 January 1973 VON46m 66ch 1910 16 December 1990 Port Talbot (PT)
Burrs Road Gate box: line controlled by Clacton (C) COC68m 04ch 4 May 2009 Colchester [new] (CO)
BB Burscough Bridge WBS327m 50ch 1922
Burton Agnes HBS25m 45ch 1875✖or 1903? 4 February 1990 Driffield (D)
BH Burton & Holme Named Burton & Holme No 2 to 27 June 1971 CGJ7 Carlisle (CE)?
BHR Repeater signals
Burton & Holme No 2 See Burton & Holme
BJ Burton Joyce Downgraded to gate box 11 October 1970: line controlled by Netherfield Junction (NJ) NOB14m 77ch 26 June 1910 8 April 1984 Netherfield Junction (NJ)
BL Burton Lane YMS1m 09ch 1878 30 April 1989 Strensall (S)
BS Burton Salmon NOC≈16m 69ch 10 October 1982 Milford (M)
B Unclear if code actually carried
D Down line automatic signals
U Up line automatic signals
BY Bury St Edmunds Named Bury St Edmunds Yard to 11 August 1985 CCH28m 33ch 1888
BJ Bury St Edmunds Junction CCH28m 60ch by 1893 7 May 1983 Bury St Edmunds Yard (BY)
Bury St Edmunds Yard See Bury St Edmunds
BE Bushey CWJ15m 75ch 10 December 1988 Willesden Suburban (WS)
RBE Repeater signals
B Butterwell BWO16m 10ch 1977
also had draw-ahead signals lettered A to D with no number
BN Buxton Believed code not carried BEJ18m 70ch 1894
BS Briggs Sidings fixed signals and stop boards. Code used from 25 May 2018
HH Hillhead Quarry stop boards. Code used from 4 September 2022
BX Buxton Depot Code used from opening. Signals suffixed I or O for inbound or outbound movements BEJ 17 May 1993
BL Bystable Lane Code seen a little north of Thornton Abbey station BAR≈102m 10ch