logoSignal box prefix codes

A (hopefully) comprehensive listing

'Boxes beginning P

Last update 2 June 2019

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Code Signal Box Note ELR Mileage Opened Closed Control to
V Paddington Arrival Box possibly also known as Paddington Suburban.  Code used on Hammersmith & City lines HTH 0m 20ch 13 August 1933 25 November 1938 Old Oak Common (OO)/
Edgware Road [London Underground] (OP)
FRV Hammersmith & City fog repeater signals
FRVX Hammersmith & City fog repeater advance starting boards
RV Hammersmith & City repeater signals MLN1 0m 20ch
VX Hammersmith & City advance starting boards
EC Code used on Engine & Carriage line
(Unclear if EC signals controlled from Paddington Arrival)
  Paddington Arrival [temporary]   MLN1 0m 20ch 13 December 1938 1 July 1939 Paddington Arrival [reopened] (V)
HTH 0m 20ch
V Paddington Arrival [reopened] Box possibly also known as Paddington Suburban.  Code used on Hammersmith & City lines.  Severely damaged by fire HTH 0m 20ch 2 July 1939 19 November 1967 ?
FRV Hammersmith & City fog repeater signals
FRVX Hammersmith & City fog repeater advance starting boards
RV Hammersmith & City repeater signals MLN1 0m 20ch
VX Hammersmith & City advance starting boards
EC Code used on Engine & Carriage line
(Unclear if EC signals controlled from Paddington Arrival)
  Paddington Suburban See Paddington Arrival
QE Paddock Wood Named Paddock Wood 'B' to 26 June 1932.  Unclear whether code used XTD 34m 74ch 26 June 1898 1 April 1962 Tonbridge (PE)
  Paddock Wood 'B' See Paddock Wood
  Padnal Burnt down 20 December 1989 ETN 73m 17ch 1887 21 February 1990 Cambridge (CA)
PN Paignton   TOR 222m 04ch 1890 26 March 1988 Paignton South
DT Down Torbay line automatic signals
UT Up Torbay line automatic signals
PN Paignton [new]   TOR 222m 10ch 5 August 1989    
  Paignton South   TOR 222m 22ch   August 1989 Paignton [new] (PN)
P Paisley Code used from 1966 AYR1 c6m 30ch 14 November 1966 1 September 1985 Paisley [new] (P)
P Paisley [new] Former Paisley signals AYR1 6m 30ch 1 September 1985 25 December 2011 West Of Scotland Signalling Centre (GP, GPA, GPB, GPD, GPE, GPG, GPH, GPK, GPL, GPU, GPW)
PA Ayr interlocking
PB Barassie interlocking
PE Elderslie interlocking.  Code used from 1985
PG Glengarnock interlocking.  Code used from 1985
PH Hunterston interlocking.  Code used from 9 November 1986
PK Kilwinning interlocking.  Code used from 1986
PKR Kilwinning interlocking banner repeater signals
PU Gourock interlocking.  Code used from 27 March 1985
R Banner repeater signals
P Paisley St James Temporary code from 14 November 1966 for two signals, until taken over by Paisley GOU2 c108m 46ch 18 August 1902 11 December 1966 Paisley (P)
P Pangbourne   MLN1 41m 56ch 1893 9 May 1965 Reading (R)
PF Pantyffynnon Named Pantyffynnon South to 13 March 1966 LLA 10m 1ch December 1892    
P
CWL Central Wales Line points indicators.  Code used from 2010
KN Knighton points indicators
LO Llandeilo points indicators
LR Llandrindod Wells points indicators
LV Llandovery points indicators
LW Llanwrtyd points indicators
VOT Llandovery points indicators.  Code used from 2010
  Pantyffynnon South See Pantyffynnon
PR Par   MLN3 281m 69ch 1879    
PB Parbold   WBS3 24m 49ch 1877    
PD
P Parkeston   MAH 68m 63ch 1987    
P Parkeston [temporary panel]   MAH c68m 63ch 1 December 1985 1987 Parkeston (P)
PE Parkeston East   MAH 69m 18ch 1882 18 November 1973 Parkeston West (PW)?
PG Parkeston Goods Junction   MAH 68m 18ch 1934 1 December 1985 Parkeston [temporary panel] (P)
PW Parkeston West   MAH 68m 69ch 1934 1 December 1985 Parkeston [temporary panel] (P)
P Parkgate Codes used from February 1966 ECM5 44m 67ch   13 May 1972 Darlington (D)
D Down line automatic signals
U Up line automatic signals
P Parkgate Junction Code used from 1965 TJC3 163m 18ch March 1902 29 July 1979 Sheffield (S)
P Parkhead North Junction Code used from 1960 ARG2 1m 72ch 16 August 1875 28 July 1991 Yoker (YF)
PJ Park Junction   NWN 0m 54ch October 1885    
DM Down main line automatic signals
UM Up main line automatic signals
  Park Junction   ALP c5m 3ch June 1939 25 March 1984 Line closed
D Down line automatic signals
U Up line automatic signals
D Park Lane Gate box/ground frame; line controlled by Liverpool Street [new] (L) HDT 13m 15ch   28 November 2012 Liverpool Street [new] (L)
U
PR Park Royal Formerly named Park Royal West ANL 4m 64ch May 1903 15 July 1979 Old Oak Common [new panel] (OO)
  Park Royal West See Park Royal
M Parks Bridge Junction   XTD 6m 17ch 30 June 1929 8 February 1976 London Bridge (L)
PS Park South   CBC1 33m 6ch 18 June 1883    
P Parkwood   MAC3 39m 39ch 17 October 1903 April 1966 Wadsley Bridge (WY)/
Neepsend (N)
PH Parsons Heath Code used by 1962 LTN1 54m 6ch by November 1903 24 April 1983 Colchester [new] (CO)
PS Parson Street Junction Code used from April 1970 MLN1 120m 33ch 13 November 1932 4 December 1971 Bristol (B)
P Partick Junction Code used from 1935 NEM3 3m 37ch 1 December 1886 3 July 1960 Hyndland (HY)
PS Parton Station Code used from 2008 CBC2 1m 41ch 1879 31 May 2010 Bransty (BY)
PNR Distant signals.  Code seen on 2006 signalling plan
PB Pass Of Brander Automatic "rock" signals, not a control point in the usual sense OBN2   January 1882    
P Pasture Street Code used from 26 September 1993 MAC3 109m 49ch 29 April 1962 30 December 2015 York Rail Operating Centre (P)
  Patchway   BSW 5m 70ch 19 October 1902 20 February 1971 Bristol (B)
  Peak Forest South   CNB1 163m 57ch 1925    
P Peckfield   HUL4 11m 17ch c1873 19 April 1997 Church Fenton (CF)
PR Distant signals
TC Peckham Rye Named Peckham Rye 'C' to 20 February 1965 BTH1 3m 45ch 1899 13 April 1969 Bricklayers Arms Junction (F)
CAT 4m 79ch
  Peckham Rye 'C' See Peckham Rye
PD Pegswood Code used from December 1962 ECM7 c18m 70ch   20 February 1972 Morpeth (M)
D Down line automatic signals
RU Repeater for up line automatic signals
U Up line automatic signals
P Pelaw   LEN3 c98m 13ch 2 October 1960 12? September 1982 Gateshead (G)
PW Code used by 1969 until closure
D Down direction automatic signals
U Up direction automatic signals
PS Pelham Street Signals to east of signal box SPD3 82m 28ch 1874 31 August 2008 Lincoln Control Centre (LG/BL/SL)
P Signals to west of signal box
  Pembrey See Pembury & Burry Port
PY Pembury and Burry Port Also known as Pembrey.  Code used by 2 December 1973 SWM2 228m 70ch 1907    
PE Penarth Curve East No 1 ground frame   BRY 0m 23ch 28 March 1966    
PN Penarth Curve North Downgraded to ground frame 26 March 1966; closed; reopened 13 February 1988 RAD 0m 48ch October 1933 27 March 1966 Cardiff (C)
PC Pencoed (East) Code used before downgrading to gate box 13 September 1965: line controlled by Port Talbot (PT) SWM2 186m 56ch 1905 31 March 2007 (last train);
13 April 2007 (official)
Port Talbot [temporary] (PT)
EF Penge East   VIR 7m 12ch   25 February 1968 Beckenham Junction (EG)
KC Penge West Downgraded to ground frame 8 October 1950 LBW 7m 14ch 15 October 1911 21 August 1966 London Bridge (E)
P Penistone Named Huddersfield Junction to 23 April 1989.  Code used from renaming PED1 28m 37ch 1887 9 April 1998 Barnsley (BY)
HJ Code used when named Huddersfield Junction PEH 13m 42ch
H Code present in 1969 MAC1 28m 37ch
PG Penistone Goods   MAC1 27m 59ch 13 November 1899 18 July 1981 Line closed
PW Penistone West   MAC1 28m 21ch 14 May 1893 February 1966 Huddersfield Junction (HJ)
PE Penkridge   RBS3       Stafford No 4 (SD4)
PR Penmaenmawr Code used by 1987 CNH3 228m 63ch 13 December 1952    
PD Penyffordd Code in use by December 2018 WDB1 7m 41ch 17 December 1972    
PZ Penzance   MLN4 326m 32ch 24 April 1938    
SE One signal at Long Rock depot
LR Penzance Long Rock depot   MLN4   2016?    
PM Percy Main     5m 78ch from Newcastle 27 March 1955? 10 August 1980? Line transferred to Metro
P Perth Code used from 1962 SCM5 20m 79ch 27 March 1962    
HGL 151m 5ch
H Perth Hump Yard Control Tower Code for hump signals only HGL1 c152m 65ch 31 July 1961   Perth (P)
P Peterborough   PMJ 22m 4ch 3 December 1972    
PBO Unclear if code carried.  Stamford route
PE Peterborough East   EMP 100m 7ch 17 April 1932 10 June 1973 Peterborough (P)
PN Peterborough North Reduced to ground frame 20 August 1972 ECM1 c77m 4ch 6 April 1874 3 December 1972 Peterborough (P)
PF Petersfield   WPH1 54m 65ch c1890    
DPF Distant to controlled signal
WA Automatic signals
DWA Distant to automatic signal
CCV Pevensey   WJB 23m 3ch 1876 late on 13 February 2015
(delayed from 22 November 2013)
Three Bridges Rail Operating Centre (TEB)
  Philips Park No 1   PPA1 1m 70ch 1889 15 September 1998 Manchester North (MN)
  Philips Park No 2   PPA1 2m 19ch 1889 15 September 1998 Manchester North (MN)
PE Piccadilly East Temporary 'box CMP2 188m 45ch 21 December 1998 2 January 1999 Manchester Piccadilly (MP)
PL Picketts Lock   BGK 8m 69ch 1910 10 March 1969 Brimsdown (BD)
D Down line automatic signals
U Up line automatic signals
P Picton   LEN3 52m 31ch 1873 29 November 1997 Low Gates (LG)
PN Code used by 1988
D Down line automatic signals
U Up line automatic signals
PR Picton Road Junction   EWG     c23 May 1982 Edge Hill (EH)
P Pilmoor Named Sessay Wood to 19 February 1943, then Pilmoor South to 15 May 1960.  Code used from final renaming ECM5 c15m 27ch 12 March 1933 28 July 1985 Tollerton (T)
D Down line controlled and automatic signals.  Code used from opening to 15 May 1960
D Down line automatic signals.  Code used from 15 May 1960 to 21 June 1971
DF Down fast line automatic signals.  Code used from 19 September 1965
DS Down slow line automatic signals.  Code used from 19 September 1965
U Up line controlled and automatic signals.  Code used from opening to 15 May 1960.  Slow lines have suffix S
U Up line automatic signals.  Code used from 15 May 1960 to 21 June 1971.  Slow lines have suffix S
UF Up fast line automatic signals.  Code used from 21 June 1971
US Up slow line automatic signals.  Code used from 21 June 1971
  Pilmoor South See Pilmoor
PJ Pilning Junction Code used from 22 February 1971 BSW 9m 13ch March 1901 13 March 1971 Bristol (B)
PS Pilning Station Code in use by July 1969 BSW 9m 40ch 1 September 1886 13 March 1971 Newport (N)
PN Pinxton Temporary closure 18 January 1997 to ?? resulting from vandalism.  'Box moved to Barrow Hill Roundhouse 12 June 2008 PBS1 135m 47ch 24 January 1897 6 August 2007 East Midlands Control Centre (PK)
P Pirton Crossing Named Pirton Sidings to 10 March 1969 when downgraded to gate box: line controlled by Gloucester (GP). BAG2 70m 52ch 15 October 1933 by 1995 Gloucester (G)
GP Code used from 14 May 1977
  Pirton Sidings See Pirton Crossing          
PT Pitlochry Code used from 2002 HGL2 28m 31ch 1911 26 March 2019 (official) Stanley Junction (SJP)
PT Pitsea Formerly named Pitsea Junction FSS2 26m 43ch 1960 8 April 1996 Upminster [new] (UR)
U Up line automatic signals
PJ Code when named Pitsea Junction TLL 32m 38ch
RPJ Repeater signals
  Pitsea Junction See Pitsea
P Plaistow   FSS1 4m 38ch ? 7 May 1960 (in part);
1 May 1961 (remainder)
Barking [LUL] (FF) (in part);
Barking (BK) (remainder)
PJ Plean Junction Code used from 1999 SCM3 114m 26ch c1870 30 June 2008
(delayed from 28 April 2008)
Larbert North (LN)
PJ Pleck Junction Unclear if code carried BJW2 5m 24ch ? 1965 Walsall (WL)
EBD Pluckley   XTD 50m 37ch by 1874 17 December 1967 Ashford (UE)
PY Plumley West   CDM2 18m 7ch 1908    
P Plumpton Code not carried.  Downgraded to gate box 13 February 1985 (controlled signals T645/P6 and T800/P20): line controlled by Three Bridges (T) KJE1 44m 48ch 1891 8 February 2016
(delayed from 24 February 2014)
Three Bridges [new] (T)
PN Plumpton   CGJ7 c56m 21ch   3 March 1973 Carlisle (CE)
  Plumpton Junction   CBC1 17m 58ch 1898 19 March 2000 Ulverston (UN)
PD Plumstead   NKL 10m 17ch 2 December 1900 1 November 1970 Dartford (D)
P Plymouth   MLN1 246m 4ch 26 November 1960    
DM Down main line automatic signals
UM Up main line automatic signals
MB Plymouth Millbay Downgraded to ground frame 14 December 1969 MLN1 246m 48ch June 1914 30 June 1971 (last train) Line closed
WBD Point Pleasant Junction   RDG1 5m 10ch 1 July 1889 16 September 1990 Wimbledon (W)
WA Automatic signals
WDZ Pokesdown   BML2 106m 32ch 27 April 1930 3 December 1972 Bournemouth (WFB)
WA Automatic signals
PG Polegate Demolished 12 November 2016 KJE3 19m 33ch 1883 late on 13 February 2015
(delayed from 22 November 2013)
Three Bridges Rail Operating Centre (TEB)
PH Polesworth   LEC2 106m 38ch   22 July 1990 Nuneaton (NN)
PN Pollokshaws North Downgraded to ground frame 24 February 1974 GBK 2m 29ch 25 November 1900 15 June 1975 Glasgow Central (G)
N Polmadie Depot North end signals (also had suffix E and X for entrance and exit signals)     26 November 1995?    
S South end signals (also had suffix E and X for entrance and exit signals)
  Polmaise   SCM3 116m 62ch 27 October 1905 7 December 1997 Stirling Middle (SM)
P Polmont   EGM1 24m 60ch 12 March 1979 25 November 2012 Edinburgh (EPJ/EPB)
PB Bo'ness interlocking area.  Code used from 1979
PJ Polmont Junction   EGM1 c24m 60ch 1872 12 March 1979 Polmont (P/PB)
P Pontefract East   WAG1 c57m 43ch   21 November 1968 Knottingley (K)
R Distant signals
PS Pontefract South   SMJ2 4m 44ch   1981? Ferrybridge (F)
P
D Down line automatic signals
R Distant signals
U Up line automatic signals
P Pontrilas   HNL1 11m 14ch 1880   Wales Rail Operating Centre (NS) (planned)
PS
P Pontypridd   CAM 13m 9ch 1902 19 October 1998 Radyr (VR)
PJ Code used by 4 September 1977 THT 13m 9ch
PO Poole Named Poole 'B' to 15 November 1977 BML2 113m 75ch 1897 19 May 2014 Basingstoke Signalling Control Centre (PW)
WFC Poole 'A'   BML2 113m 51ch 1897 15 November 1977 Poole (PO)
  Poole 'B' See Poole
  Poplar Farm Gate box: line controlled from Attleborough (A/AB) ETN 107m 21ch   2 December 2012 Cambridge (EN)
P Poppleton   HAY1 2m 75ch c1870    
P Port Glasgow Temporary code from 27 November 1966 for two signals, until taken over by Paisley GOU2 120m 33ch   12 February 1967 Paisley (P)
  Porth   THT 16m 13ch 31 March 1981 19 October 1998 Radyr (VR)
  Portland Street Gate box: line controlled by Southport Station (ST) HXS3 18m 0ch 28 October 1990 1994 Merseyrail (ML)
P Portobello Temporary panel ECM8 3m 27ch 6 May 1973 26 June 1977 Edinburgh (EP)
EP
PR Banner repeater signals
EPR
PE Portobello East   ECM8 3m 29ch 26 September 1909 6 May 1973 Portobello (P)
PJ Portobello Junction   MLN1 1m 30ch 1880 18 September 1967 Old Oak Common [new panel] (OO)
P Port of Tyne Authority   GLT        
CCF Portslade   BLI1 2m 79ch 1877 14 May 1988 Lancing (LG)
PW Portsmouth   WPH2 44m 29ch 7 April 1968 5 February 2007 (in part);
29 October 2007 (remainder)
Portsmouth Harbour temporary panel (PH) (in part);
Havant (HT) (remainder)
WA Automatic signals
QW Portsmouth Harbour   WPH2 45m 20ch 2 October 1876 21 August 1941 Portsmouth Harbour temporary panel (QW)
QW Portsmouth Harbour temporary panel   WPH2 c45m 20ch 21 August 1941 1 June 1946 Portsmouth Harbour (QW)
QW Portsmouth Harbour   WPH2 45m 24ch 1 June 1946 21 April 1968 Portsmouth (PW)
PH Portsmouth Harbour temporary panel In old Portsmouth Harbour 'box (retained as relay room) WPH2 45m 24ch 4 February 2007 29 October 2007
(delayed from 19 March 2007)
Havant (HT)
PW Portsmouth Yard   WPH2 44m 32ch 1876 7 April 1968 Portsmouth (PW)
PS Port Sunlight Sidings Formerly named Lever Brothers Sidings CRR2 c11m 35ch 1902 2 November 1986 Rock Ferry (RF)
PT Port Talbot   SWM2 202m 49ch 22 September 1963 13 April 2007 Port Talbot [temporary] (PT)
DD Down Swansea District line automatic signals
DG Down goods line automatic signals
DM Down main line automatic signals
UD Up Swansea District line automatic signals
UM Up main line automatic signals
V Swansea area shunt signals
(unclear whether this applied to Port Talbot, or to a separate Swansea 'box)
PT Port Talbot [temporary]   SWM2 c202m 49ch 13 April 2007 20 May 2007 Port Talbot [reopened] (PT)
PT Port Talbot [reopened]   SWM2 202m 49ch 20 May 2007 4 March 2019 (in part) Wales Rail Operating Centre (PT)
P Possilpark   MRL1 2m 51ch   6 March 1977 Cowlairs (CE)
PC Potteric Carr   ECM1 154m 29ch February 1909 20 May 1979 Decoy No 1 (DY)
D Potters Bar Down direction automatic signals ECM1 12m 52ch 30 September 1886 27 March 1955 Potters Bar [new] (PB)
PB Potters Bar [new]   ECM1 12m 52ch 27 March 1955 25 March 1973 New Barnet (NB)
D Down line automatic signals
DF Down fast line automatic signals
DS Down slow line automatic signals
R Repeater signals
U Up line automatic signals
UF Up fast line automatic signals
US Up slow line automatic signals
PT Poulton Named Poulton No 3 to December 1977 PBN 14m 44ch 1896 10 November 2017 (last train);
26 March 2018 (official)
Manchester Rail Operating Centre (BL)
  Poulton No 3 See Poulton
PJ Pouparts Junction   VTB1 2m 8ch 9 June 1895 12 October 1952 Clapham Junction 'B' (EC)
PH Power House   CWJ 7m 27ch   10 December 1988 Willesden Suburban (WS)
RPH Repeater signals
PS Pratts Sidings Shunt Frame   SCQ1   9 April 1972 18 February 1985 Stoke on Trent [panel] (SE)
PS Prees   SYC 18m 40ch 1881 12 October 2013 South Wales Control Centre (SC)
PT Prescot   SBH1 1m 57ch 1954 24 September 2012 St Helens Station (SH)
PN Prestatyn Formerly named Prestatyn No 2.  Code carried by at least two signals CNH3 205m 52ch March 1897 late on 23 March 2018 (last train);
26 March 2018 (official)
Wales Rail Operating Centre (FH)
  Prestatyn No 2 See Prestatyn
PN Preston   CGJ6 0m 41ch 22 October 1972    
PI Points indicators at Morecambe.  Code used from 10 December 2012
R Repeater signals
P Preston Le Skerne   ECM5 c49m 49ch   February 1966 Ferryhill No 3 (F)/
Parkgate (P)
P Prestonpans Code used from 1977 ECM8 9m 43ch 15 May 1904 11 September 1977 Edinburgh (EM)
CC Preston Park Named Preston Park South to 16 October 1932 VTB3 49m 28ch 25 May 1879 17 March 1985 Three Bridges [new] (T)
  Preston Park South See Preston Park
  Prestwich   MVB2 4m 34ch   17 August 1991 Line transferred to Manchester Metrolink
P Prestwick   AYR6 37m 27ch 1928 7 April 1985 Ayr Local Signalling Panel (A)
P Prince Of Wales Named Prince Of Wales Sidings to 21 November 1968.  Closed through fire damage.
(also had draw-ahead signals in colliery sidings lettered A to E, with no number)
CPM1 56m 66ch 1912 22 October 1995 Prince Of Wales [temporary box] (P)
POW Unclear whether code used
P Prince Of Wales [temporary box]   CPM1 c56m 66ch 1 November 1995 9 March 1996 Prince Of Wales [reopened] (P)
P Prince Of Wales [reopened] (also had draw-ahead signals in colliery sidings lettered A to E, with no number) CPM1 56m 66ch 10 March 1996    
POW Unclear whether code used
  Prince Of Wales Sidings See Prince Of Wales
PE Princes End   PRN 1m 63ch 14 October 1914 3 April 1981 Line closed
P Princes Risborough Named Princes Risborough North to 15 September 1968 NAJ2 24m 50ch 1905 12 March 1991 Marylebone [new] (ME)
PR
  Princes Risborough North See Princes Risborough
P Priory Junction   HAJ 1m 78ch   May 1984 Ashburys (AS)
CD Prologis Park Stop boards.  Both codes reported; likely only one used     ?    
DC
PH Proof House Junction   RBS1 112m 24ch   4 June 1966 Birmingham New Street (NS)
PE Prudhoe Code used from 6 April 2002 NEC2 10m 49ch 1872    
P Original code
PH Pulborough   TBH1 49m 74ch 1878 17 March 2014
(delayed from 25 October 2013)
Three Bridges [new] (T)
P Purfleet   TLL 16m 2ch 26 October 1924 25 May 1996 Upminster [new] (UR)
PRR Purfleet Rifle Range   TLL       Upminster [new] (UR)
CU Purley   VTB2 13m 41ch 8 May 1955 14 January 1984 Three Bridges [new] (T)
CA Automatic signals
DCA Distant to automatic signals
DCU Distant signals
BP Puxton & Worle Downgraded to gate box 29 January 1972; also controls Huish: line controlled by Bristol (B).  Code used from 16 December 1973.  Controls four signals total MLN1 134m 0ch 1916    
PX Purton Common Gate box: line controlled by Swindon (SN) SWM2     12 May 1981 Swindon (SN)
  Pwllheli West Downgraded to ground frame DJP 132m 57ch 1907    
PE Pyle East Named Pyle Junction to 7 March 1947 SWM2 195m 71ch 1900 11 September 1965 Port Talbot (PT)
  Pyle Junction See Pyle East
PW Pyle West   SWM2 196m 51ch 7 March 1947 11 September 1965 Port Talbot (PT)
PR Pyewipe Road   PYE2 4m 20ch 1958    
PW Code shown on signalling plan

 

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