logoSignal box prefix codes

A (hopefully) comprehensive listing

'Boxes beginning S

Last update 7 September 2018

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Code Signal Box Note ELR Mileage Opened Closed Control to
SA St Albans   SPC1 19m 64ch 1892 early on 2 December 1979 West Hampstead (WH)
SA St Andrews Junction [Bristol]   AMB 15m 79ch 9 May 1910    
Z "Creep" signals at Bristol Bulk Handling Terminal
SA St Andrews Junction [West Midlands]   SKN 41m 19ch     Saltley (SY)
SA St Annes   KBS1 16m 71ch   20 November 1983
(delayed from 2 October 1983)
Kirkham North Junction (KM)
  St Austell   MLN3 286m 34ch 1905 22 March 1980 Burngullow (B)
SA St Austell Ground Frame Line controlled by Par (PR) MLN3 286m 23ch 22 March 1980    
SB St Bees Believed code not carried CBC1 70m 22ch 21 February 1891    
SB St Blazey   NEW 282m 19ch 25 June 1908    
B St Botolphs   STB 53m 68ch by 1884 17 July 1983 East Gate Junction (EG)
WDN St Denys   BML1 77m 12ch March 1899 11 October 1981 Eastleigh [new] (E)
SN Code used in final years
WA Automatic signals
SD St Dunstans Unclear if code carried LBE4 191m 71ch August 1877 4 December 1972 Mill Lane Junction (M)
SE St Enoch Code used from opening SSR 0m 14ch 14 May 1933 26 November 1967 High Street Junction (HS) (part);
closed (remainder)
SE St Erth   MLN4 320m 67ch 10 September 1899    
SF St Fagans Code used before downgrading to gate box 23 April 1966: line controlled by Cardiff (C) SWM2 174m 34ch June 1889 24 December 2016 (last train);
29 December 2016 (official)
Wales Rail Operating Centre (CF)
SG St Germains Downgraded to gate box 20 November 1977 ECM8 11m 52ch   29 September 1985 Edinburgh (EA)
SG St Germans Unknown whether code carried on signals MLN2 256m 23ch 6 May 1973 25 April 1998 Plymouth (P)
SH St Helens Station   SBH2 5m 20ch 1891    
SJB St James Bridge   LEN3 100m 23ch   17 July 1965 Gateshead (G)
SD St James Deeping   WEB 83m 29ch 16 March 1876 3 November 2014
(delayed from 3 March 2014)
Lincoln Control Centre (WS)
SJ At least one signal
JD Small number of signals
S St James Junction   PED5 22m 39ch 3 February 1895 9 July 1979 Doncaster (D)
SJ
L St Johns   XTD 5m 54ch 30 June 1929 8 February 1976 London Bridge (L)
A Automatic signals
J St Johns [Glasgow] Code possibly not carried on signals   0m 46ch 1 April 1893 26 November 1967 High Street Junction (HS)
SL St Leonards West Marina   WJB 32m 56ch 1 June 1889 2 June 1997 Bo Peep Junction (BJ)
WBH St Margarets   RDG1 10m 61ch 1882 10 November 1974 Feltham (F)
SM St Margarets [Herts] Codes used from 17 January 1960 HEB 20m 23ch 1887 27 May 2003 Liverpool Street [new] (L)
RSM Repeater signals
U Up line automatic signals
  St Marys Downgraded to gate box 5 October 1970: line controlled by Gloucester (G) SWM1 98m 65ch c1870    
SMG St Mary's Goods Yard     3m 16ch April 1938 20 April 1980 Derby (DY)
SN St Neots   ECM1 51m 37ch 20 April 1898 10 December 1977 Peterborough (P)
SP St Pancras   SPC1     3 July 1982 West Hampstead (WH)
D Down line automatic signals
PM St Philips Marsh Depot   BRL        
CQ Salfords   VTB3 23m 58ch 1907 27 April 1975 Earlswood (CR)
SY Salisbury   BAE1 83m 38ch 19 August 1981    
RWA Repeater to automatic signals
WA Automatic signals
WFQ Salisbury Tunnel Junction Code used from 23 April 1968 BAE1 82m 34ch c1865 17 August 1981 Salisbury (SY)
DWFQ Distant signals
SG Salop Goods Junction   LLI 157m 71ch 1901    
  Salthouse Junction   CBC1 27m 57ch 1898 6 September 1992 Barrow in Furness (BF)
DLB 27m 57ch
SY Saltley   DBP3 40m 38ch 11 August 1969   West Midlands Signalling Centre (BB/LJ/WM) (in part)
BB Barnt Green-Redditch branch signals.  Code used from 1 September 2014
SYR Distant signal (seen at University)
S Saltmarshe   TJG2 3m 49ch 1905 26 November 2018 (planned)
(delayed from 3 April 2018)
York Rail Operating Centre (TG) (planned)
SA "Official" code, not seen on site
D Down direction automatic signals
U Up direction automatic signals
SK Salwick Demolished 19 December 2017 PBN 5m 3ch 1889 10 November 2017 (last train);
29 January 2018 (official)
Manchester Rail Operating Centre (BL)
PX Sampford Peverell Pugham Crossing signals MLN1 177m 32ch 14 February 1932 10 March 1968 Exeter (E)
SH Sandbach   CMP1 162m 61ch 5 June 1959 11 December 2005 (last train);
11 March 2006 (official)
Manchester South (MS)
RSH Repeater signals
SJ Sandbach Junction   CDM2 c20m 74ch     Greenbank (GK)
  Sanderstead   SCU1 12m 15ch 10 March 1884 2 November 1985 Three Bridges [new] (T)
  Sandhills See Merseyrail (ML)
SN Sandown Downgraded to ground frame 25 November 1988 IOW 6m 41ch 1893 25 March 1989 Ryde St Johns Road (WFP)
SW Sandwich   BME2 86m 38ch 30 January 1938    
S Sandy Named Sandy South to 1927 ECM1 43m 70ch 6 November 1893 10 December 1977 Peterborough (P)
ST Sandycroft Closed after being switched out for many years CNH3 184m 73ch 1900 24 January 2005 Chester PSB (CR)
  Sandy South See Sandy
S Santon   DOW   4 July 1910 31 March 1973 Scunthorpe (S)
SW Sawbridgeworth   BGK 26m 53ch 1882 24 February 1985 Harlow Mill (HA)
D Down line automatic signals
RD Repeaters to down line automatic signals
RSW Repeaters to controlled signals
U Up line automatic signals
  Saxby Junction Closed after being switched out for many years GSM2 101m 53ch 1892 6 February 2005 Whissendine
SY Saxilby Up signals SPD3 88m 42ch 25 June 1939 3 January 2014
(delayed from 10 June 2013)
Lincoln Control Centre (LG)
S Down signals
SM Saxmundham Original code used to 23 October 2012 ESK 91m 5ch 1881    
ES Code used from 23 October 2012
BS Beccles section boards.  Code used to 23 October 2012
HH Halesworth fixed distant boards.  Code used to 23 October 2012
HW Halesworth section boards.  Code used to 23 October 2012
OB Oulton Broad South section boards.  Code used to 23 October 2012
SB Saxmundham stop boards.  Code used to 23 October 2012
SX Saxmundham section boards.  Code used to 23 October 2012
WB Woodbridge section boards.  Code used to 23 October 2012
WBDD Woodbridge fixed distant boards.  Code used to 23 October 2012
WBDDX Woodbridge fixed distant boards (reverse direction working).  Code used to 23 October 2012
WF Westerfield.  Code used to 23 October 2012
WFD Westerfield fixed distant boards.  Code used to 23 October 2012
WFS Westerfield stop boards.  Code used to 23 October 2012
WSF Westerfield section boards.  Code used to 23 October 2012
S Scopwick Code carried by at least one signal SPD2 70m 49ch 1937 30 April 1989 Scopwick [temporary gate box] (SL)
SK Unclear whether code used
S Scopwick [temporary gate box] Code carried by at least one signal SPD2 70m 49ch 30 April 1989 22 July 1990 Scopwick [reopened] (SL)
SK Unclear whether code used
S Scopwick [reopened] Code carried by at least one signal SPD2 70m 49ch 22 July 1990 4 April 2014
(delayed from 23 September 2013)
Lincoln Control Centre (SL)
SK Unclear whether code used
SD Scotswood Code used from 6 February 1966 NEN 2m 69ch   27 February 1983 Newcastle (N)
D Down line automatic signals
RD Banner repeaters to down line automatic signals
U Up line automatic signals
SG Scout Green Code used from 1 April 1973 CGJ7 35m 12ch   14 April 1973 Carlisle (CE)
SN Scremerston Code used from 10 April 1960 ECM7 63m 46ch   15 March 1981 Tweedmouth (T)
D Down line automatic signals
U Up line automatic signals
SN Scropton   NSS 22m 53ch c1886    
S Scunthorpe   DOW 23m 27ch 1 April 1973    
S Scunthorpe And Frodingham   DOW 22m 50ch 11 March 1928 1 April 1973 Scunthorpe (S)
B Scunthorpe BSC Coal Handling Plant   DOW c24m 30ch      
BSC Scunthorpe BSC Terminal   SAN 0m 69ch      
H Scunthorpe Hump Draw ahead signals DOW 23m 70ch c23 April 1972    
RH Approach to draw ahead signals
RRH
RRRH
A Seabanks Codes possibly used with ground position light signals SEA     25 July 1987 Dawdon (DN)
B
  Seacroft Downgraded to gate box 19 December 1967; line controlled by Skegness (S) GRS4 8m 2ch September 1899 29 April 1990 Skegness (S)
SF Seaford Permanently switched out June 1996 STS 58m 63ch 1895 18 January 2002 Newhaven Harbour (NH)
S Seaham At least one signal.  Downgraded to gate box 15 November 2010: line controlled by Ryhope Grange (NS) LEN3 84m 44ch 1905 13 September 2013
(delayed from 25 June 2011; "official" from 2 February 2014)
Ryhope Grange (NS)
BC Seaham Colliery [British Coal]       14 December 1986   Colliery closed
SE Seamer East   YMS 39m 17ch 1910 9 April 2000 Seamer [temporary panel] (SR)
E Earlier code used from 1984
SR Seamer [temporary panel]   YMS 39m 18ch 9 April 2000 5 November 2000 Seamer [reopened] (SR)
SR Seamer [reopened]   YMS 39m 17ch 5 November 2000    
YS York to Scarborough section.  Code used from 1 November 2010
SW Seamer West   YMS 38m 63ch 1906 9 April 2000 Seamer [temporary panel] (SR)
D Down line automatic distant signals HBS 50m 43ch
S Selby Named Selby South to 1972.  Code used from renaming.  Temporary panel fitted 1972 HUL1 31m 10ch   29 April 1973 Selby Panel (S)
SS Code used when named Selby South
SC Selby Canal   TCW1 173m 50ch   9 April 1972 Selby South (S)
SD Selby 'D' Ground Frame Named Selby Dock Ground Frame to 1972         Selby Panel (S)
  Selby Dock Ground Frame See Selby 'D' Ground Frame
C Selby Mine NCB Control Room
(also had draw-ahead signals in colliery sidings lettered SA to SF, letters arranged vertically, with no number)
Stone Bunker line signals HUL3 c5m 60ch     Sidings closed
B Draw ahead signals
D Draw ahead signals
S Siding signals
SN Selby North Code not certain       18 April 1971 Selby South (SS)
S Selby Panel Named Selby West until 29 April 1973 when panel transferred from Selby South HUL3 0m 40ch 1870    
U Up line automatic signals
  Selby South See Selby
- Selby Swing Bridge   HUL2 30m 70ch 1891    
  Selby West See Selby Panel
S Selhurst Depot [temporary]   LBW 9m 0ch 13 May 1984 22 March 1985 Selhurst Depot [permanent] (S)
SUY Depot shed protection signals
S Selhurst Depot [permanent]   LBW 9m 0ch 23 March 1985    
SUY Depot shed protection signals.  Code used until September 2003
SUZ Depot shed protection signals.  Code used from September 2003
SJ Selhurst Junction   VTB1 9m 44ch 6 July 1903 21 March 1954 Gloucester Road Junction (CY)
CA Automatic signals
SD Sellafield   CBC1 63m 76ch 1918    
S Unclear whether code used
SG Selling Out of use since damaged by fire.  Now preserved at Eythorne (East Kent Light Railway) FDM 55m 21ch c1870 July 1995 Faversham (EY)
SO Selly Oak Downgraded to ground frame 6 September 1969 BAG1 45m 62ch 1957 12 August 1973 Saltley (SY)
SN Selsdon   WDS 14m 44ch 10 March 1884 1 April 1984 Three Bridges [new] (T)
GF SERC Ground Frame   AMB 12m 70ch 10 April 2016    
  Sessay Wood See Pilmoor
D Sessay Wood Down direction signals ECM5 c18m 0ch 12 March 1933   York [PSB] (Y)
U Up direction signals
SJ Settle Junction   SKW1 234m 42ch 14 September 1913    
SK Seven Kings   LTN1 c8m 30ch 1 March 1899 7 August 1949 Liverpool Street (L)
NE Sevenoaks Code used from opening XTD 21m 76ch 4 March 1962 28 June 1993 Ashford IECC (AD)
A Automatic signals
  Sevenoaks Bat And Ball See Bat And Ball
SS Seven Sisters Junction   HDT 5m 40ch 1905 26 November 2001 Liverpool Street [new] (L)
D Down line automatic signals
U Up line automatic signals
SBJ Severn Bridge Junction   WSJ2 171m 33ch June 1903    
  Severn Tunnel East   SWM2 148m 42ch 2 June 1942 5 July 1969 Newport (N)
DH Severn Tunnel Junction Down Hump Yard   SWM2 148m 62ch 1 October 1939 4 December 1982 Newport (J)
TW Severn Tunnel West Code used from 1 November 1968 BSW 15m 50ch c1901 5 July 1969 Newport (N)
SE Seymour Junction Temporarily closed 31 July 1982 to 15 August 1982 BAC2 152m 21ch 1963 Disused since 2006
(still in sectional appendix in 2018)
 
SH Shaftholme Also called Shaftholme Junction ECM2 160m 15ch February 1958 26 October 1980 Doncaster (D)
  Shaftholme Junction See Shaftholme
WY Shalford   RSJ 40m 78ch 28 February 1954 30 December 1998 Guildford ASC (GD)
SQ Shap Quarry Code used from 18 March 1973 CGJ7 c37m 68ch   31 March 1973 Carlisle (CE)
  Sharlston Colliery (had draw-ahead signals in colliery sidings lettered A to D, with no number)          
SK Sharnbrook   SPC2 56m 46ch c17 October 1987   West Hampstead (WH)
SK Sharnbrook [temporary box]   SPC2 c56m 55ch   1 August 1981
(delayed from 16 May 1981)
West Hampstead (WH)
S Shawfield   WCM2 99m 49ch   8 April 1973 Glasgow Central (G)
SW Shaw Station   MPR3 10m 5ch c1925 3 October 2009  
S Sheffield   TJC1 158m 29ch 20 January 1973 1 May 2016 York Rail Operating Centre (S/SA)
D At least one shunt signal at Roundwood
GF Ground frame-controlled signals
N At least one shunt signal near Aldwarke
SA Aldwarke area signals
SN Sheffield North Junction   TJC1 c158m 54ch   20 January 1973 Sheffield (S)
SS Sheffield South Junction   TJC1 c158m 32ch   20 January 1973 Sheffield (S)
S1 Sheffield [Victoria] No 1   MAC3 40m 40ch March 1908 25 March 1979 Line closed
S
S2 Sheffield [Victoria] No 2   MAC3 40m 73ch 6 March 1908 15 November 1967 Line closed
S3 Sheffield [Victoria] No 3   MAC3 41m 22ch 1953 29 October 1983 Sheffield [Victoria] No 4 (S4)
S4 Sheffield [Victoria] No 4   MAC3 41m 39ch c1902 14 September 1986 Woodburn Junction (WJ)
RS4 Banner repeater signals
S5 Sheffield [Victoria] No 5 Downgraded to ground frame 3 October 1965 MAC3 41m 56ch c1902 after 1980 Woodburn Junction (WJ)
S6 Sheffield [Victoria] No 6 Downgraded to ground frame 3 October 1965 MAC3 42m 0ch 15 June 1941   Woodburn Junction (WJ)
S Shelford   BGK 52m 34ch by July 1883 10 September 1983 Cambridge (CA)
S Shenfield   LTN1 20m 9ch c December 1933 17 May 1981 Shenfield [new] (S)
DL Down Southend loop automatic signals
DS Down Southend line automatic signals
RDS Distant to down Southend line automatic signals
RS Distant signals
RUS Distant to up Southend line automatic signals
UE Up electric line automatic signals
US Up Southend line automatic signals
S Shenfield [new]   LTN1 20m 16ch 17 May 1981 30 August 1993 Liverpool Street [new] (L)
DM Down main line automatic signals
UE Up electric line automatic signals
SL Shepcote Lane   BTJ c161m 15ch 7 December 1964 8 November 1992 Woodburn Junction (WJ)
SL Shepcote Lane Junction   BTJ 161m 13ch   12 November 1992 Woodburn Junction (W)
ED Shepherds Lane   ATL 5m 49ch 8 March 1959 29 November 1981 Victoria Signalling Centre (VS)
VIR 2m 76ch
SH Shepherds Well   FDM 71m 52ch 1878 24 December 2011 East Kent Signalling Centre (EK)
S Shepreth   SBR 49m 58ch 1 January 1878 26 February 1983 Cambridge (CA)
SBJ Shepreth Branch Junction   BGK 53m 6ch by 1893 26 February 1983 Cambridge (CA)
SB Code shown in August 1973 weekly notice SBR 55m 26ch
  Sherborne   BAE2 118m 0ch 18 December 1960 4 January 1970 Sherborne [gate box]
  Sherborne [gate box] Gate box within station building: line controlled by Yeovil Junction (YJ) BAE2 118m 4ch 4 January 1970 27 February 2012 Basingstoke Signalling Control Centre (SE)
SN Sherburn in Elmet North   NOC 12m 70ch   10 October 1982 Milford (M)
S Sherburn in Elmet South   NOC 12m 38ch   10 October 1982 Milford (M)
SS  
SSX Sherwood Colliery Sidings South Ground Frame Set back signals
(Near Shirebrook)
PSE?   24 January 1988    
SH Shettleston Code used from 1960 NEM2 3m 30ch 31 July 1904 28 July 1991 Yoker (YS)
S Shields Junction No 1 Code used from 1966 AYR1 1m 8ch 6 August 1894 2 April 1967 Glasgow Central (G)
S Shildon Named Shildon South to c2 September 1967 DAE1 8m 26ch 1887    
N Shildon North [new]   DAE1   1960s June 1986? Shildon (S)
SN Shildon North   DAE1     2 September 1967? Shildon North [new] (N)?
  Shildon South See Shildon
BJ Shipley Bingley Junction   TJC3 205m 76ch 1907 25 July 1994 Leeds (L)
B Code believed used at some stage
BR Shipley Bradford Junction   SBF 206m 1ch 1907 25 July 1994 Leeds (L)
BBIB 0m 0ch
  Shipley Guisley Junction See Guisley Junction
LJ Shipley Leeds Junction   TJC3 205m 63ch   20 July 1975 Guisley Junction (G)
SH Shippea Hill Code in use by 1980 ETN 77m 26ch 1883 20 August 2012
(delayed from 25 June 2012)
Cambridge (EN)
SJ Shirebrook Junction   PSE 145m 14ch 1 January 1899    
  Shirebrook Sidings Replaced 'box destroyed by fire 27 June 1971 PSE 144m 7ch   2 June 1996 Kirkby Summit (KS)
  Shirebrook Station   PSE 144m 79ch 1890 17 January 1998 Shirebrook Junction (SJ)
  Shirehampton   CNX 7m 48ch 13 August 1905 17 October 1970 Bristol (B)
SS Shireoaks Formerly named Shireoaks Station.  Still available for emergency level crossing control.  Code used from December 1979 MAC3 54m 56ch 1874 13 December 1997 Worksop (WP)
B Shireoaks Colliery
(also had 'draw ahead' signals labelled A-F with no number)
Bunker line MAC3 c54m 68ch 4 April 1982?   Colliery closed
R Repeater signals
SE Shireoaks East Junction Code used from December 1979 MAC3 55m 62ch 23 November 1914 6 December 1997 Worksop (WP)
  Shireoaks Station See Shireoaks
SH Shirley   TSB 3m 66ch 9 December 1907 1 November 2010 West Midlands Signalling Centre (TB)
SH Shoeburyness   FSS3 39m 23ch   9 July 1995 Upminster [new] (UR)
R Banner repeater signals
SW Shoeburyness West Shunter's Control Panel   FSS3   9 July 1995   Upminster [new] (UR)
CCG Shoreham By Sea 'A'   BLI1 5m 48ch 1902 14 May 1988 Lancing (LG)
CCE Shoreham By Sea 'B'   BLI1 5m 71ch 1877 14 May 1988 Lancing (LG)
  Shoreham [Kent]   SBJ 22m 52ch by 1887 21 February 1971 Victoria Signalling Centre (VS)
EH Shortlands Junction   VIR 9m 56ch 31 May 1959 19 June 1982 Victoria Signalling Centre (VS)
S Shunters Bothy (Corkerhill CSMD) Code used from 1984 CNL c3m 11ch 19 August 1984    
ZZB2 c3m 11ch
S Sibsey   GRS3 112m 7ch October 1888    
SY
X Sidcup   HDR 12m 0ch 11 June 1894 8 November 1970 Dartford (D)
A Automatic signals
S Sighthill Junction Code used from 1960 SGN 0m 61ch 28 November 1886 25 December 1998 Cowlairs [new] (CC)
ST Silecroft   CBC1 48m 12ch 1923    
SM Silk Mill Crossing   MLN1 164m 35ch 14 July 1940 21 March 1987 Exeter (E)
  Silverhill Colliery (had draw-ahead signals in colliery sidings lettered A to H, with no number)       ?  
B Silverwood Colliery [Thrybergh area] Unclear whether this was also known as Silverwood Junction; if so downgraded to ground frame 23 March 1975       ?  
SB Sincil Bank   SPD3 82m 19ch July 1882 29 January 1984 Pelham Street (PS)
SG Singer Code used from 1959 NEM5 8m 53ch 7 November 1907 2 July 1989 Yoker (YY)
  Singleton   PBN 12m 32ch 1879 14 December 1997 Poulton No 3 (PT)
EV Sittingbourne   VIR 44m 73ch 24 May 1959 3 April 2015 (in part)
29 March 2016 (remainder)
East Kent Signalling Centre (EK/EV)
A Automatic signals
S Skegness Code probably not carried on signals GRS4 9m 5ch May 1882    
S Skellow Also known as Skellow Junction.  Code used from 8 March 1970 CJS 160m 59ch 13 March 1916 16 August 1981 Doncaster (DS)
SKA 0m 61ch
  Skellow Junction See Skellow Junction
SJ Skelton Junction   WJP1 30m 9ch 26 January 1902 10 September 1981 Skelton Junction [temporary] (SJ)
SJ Skelton Junction [temporary] Temporary box whilst permanent structure repaired WJP1 c30m 9ch 11 September 1981 6 March 1982 Skelton Junction [reopened] (DJ)
SJ Skelton Junction [reopened]   WJP1 30m 9ch 7 March 1982 7 July 1991
(full replacement signalling into use 22 July 1991)
Deansgate Junction (DJ)
S Skelton Junction [York] Code used from opening ECM5 1m 50ch 8 June 1941 11 May 1989 York [IECC] (Y)
SJ Code used by 1988
U Up line automatic signals.  Code used from opening until 13 March 1977.  Slow lines have suffix S
UF Up fast line automatic signals.  Code used from 13 March 1977 until 1980s
US Up slow line automatic signals.  Code used from 13 March 1977 until 1980s
SW Skew Bridge   CGJ5 c20m 45ch   3 February 1973 Preston (PN)
SK Skiers Spring   SHB 167m 66ch 1990 10 April 1998 Barnsley (BY)
  Skipton Station North   TJC3 221m 33ch 1915 22 October 1994 Leeds (L)
  Skipton Station South   TJC3 221m 13ch 1906 22 October 1994 Leeds (L)
SG Slade Green Control Room Depot control panel NKL 15m 60ch 14 December 1992    
DE Berthing shed protection signals
LE
SL Slade Lane   CMP2     12 December 1959 Manchester London Road (LR)
S Slateford Junction Code used from 1960 ECA3 99m 19ch 18 December 1960 17 August 1981 Edinburgh (ES)
SJ Unclear whether code carried
SE Sleaford East   GRS2 120m 57ch 1882    
SN Sleaford North Code carried by at least one signal SPD2 63m 47ch 6 March 1882 4 April 2014
(delayed from 30 December 2013)
Lincoln Control Centre (SL)
SS Sleaford South Code carried by most but not all signals SPD2 62m 15ch 30 December 1957 4 April 2014
(delayed from 30 December 2013)
Lincoln Control Centre (WS)
SW Sleaford West   GRS2 120m 33ch February 1882    
SE Sleights East 'Box preserved at Embsay PBS1 134m 76ch 3 April 1892 6 August 2007 East Midlands Control Centre (PK)
S Slough   MLN1 18m 44ch 14 October 1963 3 April 2015
(delayed from 25 December 2013)
Thames Valley Signalling Centre (T)
C Colnbrook area stop boards
DM Down main line automatic signals
ES Windsor branch emergency stop signals.  Code used from 17 March 1988.  Signals out of use from 23 January 1995, still present 20 years later
UM Up main line automatic signals
Z Draw ahead signals at Hayes
SN Slough New IECC   MLN1 18m 45ch 22 October 1992 27 December 2011 Thames Valley Signalling Centre (SN)
SW Slough West   MLN1 18m 68ch 1903 14 October 1963 Slough (S)
UM Up main line automatic signals
UR Up relief line automatic signals SLO 0m 1ch
SH Small Heath No 1 Formerly named Small Heath North DCL 127m 14ch 24 July 1910 22 July 1973 Saltley (SY)
  Small Heath North See Small Heath No 1
SD Smeafield Code used from 10 April 1960 ECM7 54m 79ch   9 December 1973 Belford (BD)
D Down direction automatic signals
U Up direction automatic signals
  Smethwick Junction   GSJ1 4m 5ch c December 1902 June 1964 Smethwick Junction [reopened] (SW)
SW Smethwick Junction [reopened] Believed code used in preparation for transferring control to Stourbridge Junction GSJ1 4m 5ch 17 April 1966 11 August 1990 Stourbridge Junction (SJ)
SB Smithy Bridge Downgraded to gate box 28 August 2011: line controlled by Rochdale West (TH) MVN2 12m 66ch 1907 19 January 2014 Rochdale West (TH)
S Snaith Gate box WAG1 68m 10ch   14 June 1986 Goole (G)
SR Snaith Road Gate box WAG1 70m 17ch   14 June 1986 Goole (G)
SF Sneinton Downgraded to gate box 7 December 1969: line controlled by Trent (TT) NOB1 0m 34ch 26 July 1914 20 July 2013 East Midlands Control Centre (NN)
  Snelland   NOB3 32m 15ch 1890 4 November 1989 Wickenby (W)
EDM Snodland   PWS2 36m 65ch c1870 24 June 2013
(delayed from March 2013)
Aylesford (AF)
SC Snowdown Colliery Closed after being switched out for many years (possibly 1997) FDM 69m 73ch 22 March 1953 28 February 2005 Shepherds Well (SH)
SE Snydale   TJC3 183m 9ch?     Line closed?
  Soham   SOB 7m 61ch 1878 4 May 1992 Cambridge (CA)
SD Soho Depot   RBS2        
EP Sole Street   VIR 26m 69ch by 1887 16 July 1972 Rochester (ER)
A Automatic signals
SB Somerleyton Swing Bridge   NOL 17m 72ch 1904    
EJ Southall East Junction   MLN1 8m 58ch 1899 11 May 1968 Old Oak Common [new panel] (OO)
ES Southall East Station Code used by 1955 MLN1 9m 1ch February 1899 11 May 1968 Old Oak Common [new panel] (OO)
WJ Southall West Junction   MLN1 9m 57ch 1872 11 May 1968 Old Oak Common [new panel] (OO)
WS Southall West Station   MLN1 9m 15ch February 1899 11 May 1968 Old Oak Common [new panel] (OO)
WDS Southampton Central   BML2 79m 28ch 2 June 1935 8 November 1981 Eastleigh [new] (E)
WFO Southampton Tunnel Junction   BML2 78m 28ch c1861 2 October 1966 Northam Junction (WDQ)
CCT Southbourne   TBH2 34m 19ch 15 February 1928 26 September 1992 Chichester (CC)
D Southbury Sidings Ground Frame HDT       Liverpool Street [new] (L)
U
S Southcote Junction   BKE 37m 68ch November 1895 24 April 1965 Reading (R)
UW Up Westbury line automatic signals BHL 37m 68ch
CV South Croydon   VTB2 11m 37ch 8 May 1955 1 April 1984 Three Bridges [new] (T)
SC Southend Central   FSS2 35m 47ch 1932 9 July 1995 Upminster [new] (UR)
SE Southend East   FSS2       Upminster [new] (UR)
S Southend Victoria   SSV 41m 25ch 1889 1 September 1992 Liverpool Street [new] (L)
SD Earlier code
SJ Southerham Junction   KJE2 51m 11ch 1874 18 September 1976 Lewes (LW)
DSJ Distant signals KJE3 9m 11ch
G South Gosforth Tyne & Wear Metro control centre.  Code applied to certain signals 1980-1989 when shared running occurred - 0.125km 18 May 1980    
SG South Gosforth Formerly named South Gosforth East.  Codes used from 1965.  Some automatic signals also had suffix X   3m 10ch from Newcastle   still open 10 April 1978 Line transferred to Metro
D Down line automatic signals
DB Down Benton line automatic signals
SGE Code used 1964-1965 when named South Gosforth East
U Up line automatic signals
  South Gosforth East See South Gosforth
SH South Hampstead   CWJ 2m 18ch   10 December 1988 Willesden Suburban (WS)
  South Harrow See Sudbury Hill, Harrow
SK South Kenton   CWJ 9m 26ch   10 December 1988 Willesden Suburban (WS)
  South Kirkby See South Kirkby Junction
C South Kirkby Colliery
(also had draw-ahead signals in colliery sidings lettered LA to LC (line B) and DD to DG (discharge hopper line), with no number)
  SKB       Line closed
DH Discharge Hopper signals
SK South Kirkby Junction Also known as South Kirkby.  Code used from November 1970 DOL1 c165m 74ch   22 May 1971 Leeds (L)
SL South Liberty Junction Code used by 13 December 1953 MLN1 121m 8ch July 1892 4 December 1971 Bristol (B)
S South Pelaw           Tyneside (T)?
SP
ST Southport Station   HXS3 18m 21ch 1917 20 March 1994 Merseyrail (ML)
WBS3 35m 15ch
SS South Shields Code used by 1963       31 March 1968 Harton (H)
S South Tottenham Station Junction Panel fitted 2 November 2009 TAH1 5m 71ch 1 July 1894    
  South Wales Control Centre See Wales Rail Operating Centre
SW South West Sidings Shunt frame         Willesden New (WN)?
SG Spalding Formerly named Spalding No 1 SPD1 44m 21ch 11 September 1921 3 November 2014
(delayed from 3 March 2014)
Lincoln Control Centre (WS)
S Original code
  Spalding No 1 See Spalding
  Speeton Downgraded to gate box 1 January 1973 HBS 37m 34ch   12 December 1988 Bridlington Quay (BQ)
SE Speke Junction   WJL3 187m 15ch 1907 2 January 2019 (planned) Manchester Rail Operating Centre (WE) (planned)
  Speke Sidings Ground Frame No 1   WJL3   2 January 2019    
  Spelbrook See Spellbrook
SP Spellbrook Name board has "Spelbrook" BGK 28m 19ch 1898 29 October 2003 Liverpool Street [new] (L)
D Down line automatic signals
RD Repeater to down line automatic signals
U Up line automatic signals
SB Spital Bridge   ECM1 c76m 52ch     Peterborough (P)
SJ Spital Junction   ECM1 75m 50ch 3 May 1873 2 December 1972 Peterborough (P)
SY Spital Yard   ECM1 c76m 60ch     Peterborough (P)
  Spittal Gate box: line controlled by Tweedmouth (TW) ECM7 65m 1ch      
SS Spondon Station Downgraded to shunt frame SPC6 125m 74ch 26 May 1918 19 December 1988 Derby (DY)
SL Spon Lane Downgraded to shunt frame 8 January 1966: line controlled by Birmingham New Street (NS) RBS2 4m 30ch     Birmingham New Street (NS)
SP Spooner Row   ETN 111m 27ch 1881 2 December 2012 Cambridge (EN)
SR Unclear whether code used
S  
SN Springbank North   AHD1 c4m 19ch     Hessle Road Junction (HR)
SS Springbank South   AHD1 c4m 59ch     Hessle Road Junction (HR)
AHD2 c0m 78ch
SN Sproughton   LTN1 70m 60ch 1925 9 December 1984 Colchester [new] (CO)
SV Spring Vale   RBS2 10m 45ch     Wolverhampton (WN)
SD1 Stafford No 1   LEC3 133m 0ch     Stafford No 4 (SD4)
SD2 Stafford No 2   LEC3 133m 12ch     Stafford No 4 (SD4)
SD3 Stafford No 3 Code presumed LEC3       Stafford No 4 (SD4)
SD4 Stafford No 4   LEC3 133m 32ch 1960 29 August 2015 Rugby Rail Operating Centre (LS/WS)
SD5 Stafford No 5   LEC3 133m 57ch c March 1952 29 August 2015 Rugby Rail Operating Centre (SC)
ST Stainforth Junction Code used from 4 June 1972 DOW 6m 37ch 1 December 1916 29 June 1980 Doncaster (D)
  Stainton Gate box NOB3 33m 60ch c1890 16 December 1989 Langworth (L)
SF Stairfoot Junction   PED3 8m 45ch 1885 17 November 1985 line closed
S Stallingborough   MAC3 104m 71ch 1884 1 October 2007 Stallingborough [new] (ST)
ST Stallingborough [new] New 'box on opposite side of line MAC3 104m 72ch 1 October 2007 30 December 2015 York Rail Operating Centre (ST)
SE Stalybridge Named Stalybridge No 2 to 6 November 1966 MVL2 7m 52ch 1886 4 November 2012 Manchester East Signalling Control Centre (SE)
  Stalybridge No 2 See Stalybridge
SC Stamford Crossing Code used from March 1961.  Downgraded to gate box September 1961: line controlled by Little Mill (LM) ECM7 40m 38ch   15 April 1978 Alnmouth (A)
S  
SJ Standish Junction   CGJ5 c9m 34ch     Warrington (WN)
SJ Standish Junction   BGL2 100m 6ch 28 June 1908 14 October 1968 Gloucester (G)
S Stanford-Le-Hope   TLL c27m 16ch   19 May 1985 Pitsea Junction (PJ)
S Stanley Junction Code used to 2002 HGL2 7m 8ch 30 July 1961    
SJ Code used from 2002
SJP Former Pitlochry area signals.  Code used from 2018
ST Stanlow & Thornton Permanently switched out 6 August 2005 HHJ 6m 4ch 1941 11 February 2008 Ellesmere Port (EP)
S Stannington Code used from June 1962 ECM7 13m 74ch   1 March 1991 Morpeth [temporary] (M)
D Down line automatic signals.  Code used until 1977
U Up line automatic signals.  Code used until 1977
SG Stanton Gate North Shunt Frame Out of use from 2002 TCC 123m 65ch 19 October 1969 June 2006 Line closed?
SF Stanton Gate South Shunt Frame Code not confirmed TCC 123m 36ch      
SGF  
S Stanway   LTN1 49m 0ch 1893 10 December 1961 Colchester Station (CS)
SS Stapleford & Sandiacre Downgraded to shunt frame 18 October 1969; line controlled by Trent (TT) TCC 122m 35ch 4 September 1949 9 October 2009 East Midlands Control Centre (TC)
SE Staplehurst   XTD 41m 65ch 1 April 1962 27 September 1993 Ashford IECC (AD)
A Automatic signals
SR Stapleton Road   BSW 1m 67ch 25 April 1920 17 October 1970 Bristol (B)
S Unclear if code used
SB Starbeck Formerly named Starbeck South.  Code used from 2007 HAY1 18m 23ch      
S Earlier code
SK Earlier code
SS Code when named Starbeck South
  Starbeck South See Starbeck
ZC Star Bridge   RED2 18m 41ch 29 December 1895 26 February 1983 Redhill 'A' (RH)
CS Star Lane   VTB2 16m 64ch 5 November 1899 22 November 1978 Three Bridges (T)
SK Staythorpe Crossing   NOB1 14m 20ch 8 October 1950 5 November 2016 East Midlands Control Centre (NN)
SX At least one signal reading to Power Station sidings
SC Code not confirmed
SD1 Stechford No 1 Downgraded to shunt frame 2 July 1966: line controlled by Birmingham New Street (NS) RBS1 108m 78ch     Birmingham New Street (NS)
SD Shunt frame code
SD2 Stechford No 2   RBS1 c109m 17ch   2 July 1966 Birmingham New Street (NS)
NS Temporary code until taken over by Birmingham New Street
SC Steetley Colliery Sidings   PSE     c20 July 1985 Shireoaks Station (SS)
S Steeton   TJC3 215m 3ch 31 October 1924? 29 October 1989 Kildwick (K)
D Down line automatic signals
SJ Stenson Junction   DBP1 4m 50ch 28 March 1954 28 June 1969 Derby (DY)
ST Steventon Downgraded to gate box 17 May 1965 MLN1 56m 57ch 1 April 1928 27 January 1974 Reading (R)
UM Up main line automatic signals
SY Stewartby Believed code not carried BBM 11m 17ch   6 September 2004 Marston Vale (MV)
S Stewarts Lane   BSF1 1m 34ch 10 September 1933 17 May 1980 Victoria Signalling Centre (VS)
SL BSP 1m 34ch
BSL Stewarts Lane Depot   SLC8        
  Stillington   STF 3m 71ch   18 February 1968 Norton on Tees West (NW)
SM Stirling Middle Code used from 1999 SCM3 118m 8ch 4 August 1901    
SK Stirling to Kincardine section
SN Stirling North Code used from 2002 SCM3 118m 38ch 25 November 1900    
S Stobcross Junction   ARG2 3m 73ch 11 July 1909 26 May 1965 Line closed.  Reopened 1979 controlled from Hyndland (HF)
SJ Stockport Junction Later code HAJ 4m 69ch c January 1907 10 December 1984 Guide Bridge (GB)
S Earlier code
S1 Stockport No 1 Code used to 3 September 2004 CMP2 182m 73ch 1884    
ST1 Code used by 1989; used for all signals from 3 September 2004
S2 Stockport No 2 Code used to 3 September 2004 CMP2 183m 8ch 1890    
ST2 Code used by 1989; used for all signals from 3 September 2004
S Stocksfield   NEC2 c13m 11ch   25 February 1969 Prudhoe (P)
  Stocks Lane See Newland East
S Stoke   ECM1 100m 8ch 7 December 1886 5 July 1975 Peterborough (P)
SC Stoke Canon Crossing   MLN1 190m 16ch 1874 9 December 1985 Exeter (E)
SG Stoke Gifford Depot       28 September 2015
(depot connected to network)
   
SDE  
YDE  
SE Stoke Gifford East Codes used from 8 June 1970 SWB 111m 44ch 1 May 1903 20 February 1971 Bristol (B)
DB Down Badminton line automatic signals
UB Up Badminton line automatic signals
  Stoke Gifford West   SWB 111m 76ch 1 May 1903 20 February 1971 Bristol (B)
SH Stoke Hammond   LEC1 c44m 43ch     Bletchley (BY)
SE Stoke On Trent [panel]   CMD2 19m 61ch 17 July 1966 25 May 2002 Stoke on Trent [temporary] (SOT)
SER Repeater signals
SOT Stoke On Trent [temporary]   CMD2 19m 61ch 27 May 2002 28 September 2003 Stoke on Trent Signalling Centre (SOT)
SOT Stoke On Trent Signalling Centre In panel building CMD2 19m 61ch 29 September 2003    
CH Former Colwich area.  Code used from 12 June 2005
NS Norton Bridge to Stone section
SC Stafford to Crewe section
SY Stoke Yard Shunt Frame Roughly opposite panel CMD c19m 61ch   December 1984 Stoke on Trent [panel] (SE)?
S Stonea   EMP 82m 4ch 20 November 1984    
SA Code used from 20 November 1984
SP Stonebridge Park   CWJ 6m 75ch   10 December 1988 Willesden Suburban (WS)
ST Stone Crossing Gate box; upgraded to block post 15 August 1965; downgraded to gate box 8 November 1970: line controlled by Dartford (D).  Out of use from 25 February 2018 HDR 19m 14ch c1904   Crossing closed
EBH Stonegate Formerly named Ticehurst Road TTH 43m 66ch 6 May 1893
(inspection date)
30 May 1984 Robertsbridge (RB)
SV Stonehaven Code used from 2002 ECN5 224m 75ch 24 May 1901    
SJ Stone Junction   CMD2 c27m 5ch   16 July 1966 Stoke on Trent [panel] (SE)
SS Stora Sidings Ground Switch Panel   TLL 9m 54ch 27 May 1996    
SS Stormy Sidings   SWM2 194m 51ch 1912 12 September 1965 Port Talbot (PT)
SY Code in use by 9 August 1959
SJ Stourbridge Junction   OWW 142m 25ch 1901 28 August 2012 West Midlands Signalling Centre (SJ)
S Stourton "Temporary" 'box when opened TJC3 193m 17ch 5 July 1981 28 July 2002 York [IECC] (S)
ST Stowmarket Downgraded to gate box 19 May 1985: line controlled by Colchester [new] (CO) LTN1 80m 53ch 1882    
SP Stow Park   SPD3 93m 12ch 6 July 1876 3 January 2014
(delayed from 10 June 2013)
Lincoln Control Centre (LG)
S Code not confirmed; quoted in RSSB report
SC Strafford Crossing   PED2 4m 30ch by 1889 27 February 1966 Barnsley (BY)
SR Strand Road Ground Frame [Preston] Code in use by 1984 PSR2 0m 43ch   1990s?  
SH Stranraer Harbour Code used from 2002 STR4 53m 73ch 24 November 1897    
S Stranton Code used from 19 July 1987 LEN3 71m 22ch 1911 15 November 2010 (official)
(demolished 13 November 2010)
Ryhope Grange (NS)
S Stratford   LTN1 3m 79ch 28 August 1949 6 April 1999 Liverpool Street North London Lines (S)
RS One down line shunt signal at Temple Mills
SE Stratford Eastern   LTN1 4m 16ch 1891 28 August 1949 Stratford (S)
S
DE Down electric line automatic signals
DM Down main line automatic signals
UE Up electric line automatic signals
UM Up main line automatic signals
SJ Stratford Southern Junction   DWW2 3m 79ch 1895 3 November 1984 Stratford (S)
  Stratford Upon Avon East   HSA 9m 17ch 10 August 1933 5 April 1998 Bearley West Junction (BJ)
SW Stratford Western   LTN1 3m 58ch 1893 4 September 1949 Stratford (S)
SJ Strathbungo Junction Believed code not carried GBK 1m 19ch c December 1906 17 September 1973 Cathcart (C)
VZ Strawberry Hill Carriage Sidings Code used from 23 October 2008 SHF        
SC Streatham Common Named Streatham Common North to 16 February 1936 VTB1 6m 44ch 1 July 1886 12 October 1952 Streatham Junction (BC)
CA Automatic signals
  Streatham Common North See Streatham Common
FC Streatham Hill   BBJ 5m 46ch 1898 19 November 1967 Balham (DC)
BC Streatham Junction   VTB1 6m 35ch 12 October 1952 9 August 1981 Victoria Signalling Centre (VC)
CA Automatic signals
S Streethouse Downgraded to gate box 17 May 1969 WAG1 52m 10ch   22 March 1987 Oakenshaw (O)
S Strensall Code used from 28 February 1988 YMS 6m 49ch 1901    
  Strensall No 1 Downgraded to gate box: line controlled by Strensall (S) YMS 6m 0ch   5 February 1989 Strensall (S)
SN Stretton   SPC8 145m 34ch   11 October 1969 Trent (TT)
EQ Strood Junction   HDR 31m 22ch 29 January 1939 17 October 1971 Dartford (D) and Rochester (ER)
A Automatic signals VIR 32m 69ch
ST Sturry Code when restored to block post 2 June 2004 ACR 72m 59ch 1893    
SY Code used when downgraded to gate box 14 March 1964: line controlled by Canterbury West (EDH)
SW Sturt Lane Junction   BML1 32m 15ch 25 September 1904 5 June 1966 Woking (WV)
SS Substation Ground Frame   MLN1       Old Oak Common [new panel] (OO)
S Subway Junction   MLN1 0m 76ch 10 September 1911 19 November 1967 Old Oak Common [new panel] (OO)
SJ
SY Sudbury   NSS 20m 67ch 1885    
  Sudbury Hill, Harrow Named South Harrow to 19 July 1926 NAJ1 2m 57ch 1905 29 May 1990 Marylebone [new] (ME)
SJ Sudbury Junction   LEC1 c7m 69ch     Wembley Main Line (WM)?
S Sudforth Lane Demolished over closure weekend WAG1 61m 9ch 1959 27 May 2014 Ferrybridge [new] (FE)
SL
R Repeater signals
S Summit Code used from 1972 WCM1 49m 51ch 3 October 1899 29 April 1973 Motherwell (MC)
S Sunderland Code used from new LEN3 89m 46ch 10 October 1965 11 January 2002 Tyneside (T)
SD Sunningdale Downgraded to gate box 8 September 1974 RDG1 26m 64ch c1878 5 September 1975 Feltham (F)
D Distant signals
SJ Sunnyside Junction Code used from 1960 NEM2 8m 43ch 8 August 1920 28 July 1991 Yoker (YS)
SJR Repeater signals
WN Surbiton   BML1 12m 17ch 28 June 1936 1 March 1970 Surbiton [new] (S)
S Surbiton [new]   BML1 12m 28ch 1 March 1970 14 April 1998 Woking ASC (WK)
WA Automatic signals
DWA Distant to automatic signals
DS Distant to controlled signals
SUB Sutton Bridge Junction   SHL 0m 65ch 1913    
SU Sutton Junction   BTH1 14m 71ch 4 January 1925 3 October 1982 Victoria Signalling Centre (VC)
CA Automatic signals
DCA Distant to automatic signals
SO Sutton Oak Junction   SHS2     27? May 1989 Warrington (WN)
S Suttons 'Box name unclear: 'S' signal present on HIM at about 26m 50ch HIM       Ollerton Colliery (OC)
ST Swainsthorpe   LTN1 109m 65ch 1885 19 October 1986 Colchester [new] (CO)
EL Swanley   VIR 17m 39ch 16 April 1939 19 June 1983 Victoria Signalling Centre (VS)
A Automatic signals
SM Swansea Maliphant depot   SWM2   2015    
SY Swinderby   NOB1 24m 68ch 6 January 1901    
S
SN Swindon   MLN1 77m 19ch 3 March 1968 22 February 2016
(delayed from 23 August 2014, then again from 23 May 2015)
Thames Valley Signalling Centre (SW)
BD Down direction automatic signals on up Badminton line
BU Up direction automatic signals on down Badminton line
DB Down Badminton line automatic signals
DK Down Kemble line signals
DM Down main line automatic signals
SND Down direction automatic signals on up line between Hullavington and Wootton Bassett
SNU Up direction automatic signals on down line between Hullavington and Wootton Bassett
U Up Badminton line automatic signals
UB Up Badminton line automatic signals
UK Up Kemble line signals
UM Up main line automatic signals
SB Swindon B IECC   MLN1 77m 60ch 13 September 1993 27 December 2012 Thames Valley Signalling Centre (SB)
DM Down main line automatic signals
DR Down relief line automatic signals
UM Up main line automatic signals
UR Up relief line automatic signals
LY Swindon Locomotive Yard   SWM1 77m 64ch 27 January 1924 29 June 1968 Swindon (SN)
  Swing Bridge East   PMT 24m 64ch 21 April 1899 1997 Carmuirs East Junction (CEJ)
S Swinton Junction Code believed used from 1979 SMJ1 167m 24ch   c4 October 1982 Sheffield (SA)
SS Swinton Station Possibly also named Swinton Town TJC3 166m 72ch   c22 April 1973 Kilnhurst (K)
S Existence of code uncertain
  Swinton Town See Swinton Station
SJ Swynnerton Junction   NBS 2m 6ch 5 August 1940 21 November 1965 Norton Bridge (NB)
  Sykes Junction   SPD3 90m 4ch 1885 18 September 1988 Saxilby (S/SY)
SS Syston South Junction   SPC5 103m 72ch   12 April 1987 Leicester (LR)

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