Signal box prefix codes

A (hopefully) comprehensive listing

'Boxes beginning P

Last update 1 January 2009

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Please select a starting letter from the links below:

Introduction A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Non-National Rail

Phil Deaves, Swindon, Wiltshire

- - c o n t a c t - m e - -

I am always grateful for additional information, whether entirely new records (particularly historical records), or information to fill in gaps or correct errors, via the email address above.  Thank you.

Code Signal Box Note ELR Mileage Opened Closed Control to
V Paddington Arrival Code used on Hammersmith & City lines HTH 0m 20ch 2 July 1939 19 November 1967 Old Oak Common (OO)
EC Code used on Engine & Carriage line
(Unclear if EC signals controlled from Paddington Arrival)		 MLN1 0m 20ch
QE Paddock Wood Unclear whether code used XTD 34m 74ch   June 1962 Tonbridge (PE)
  Padnal   ETN 73m 17ch   21 February 1990 Cambridge (CA)
PN Paignton   TOR 222m 10ch 1989    
PN Paignton   TOR 222m 04ch by 1873 1989 Paignton (PN)
P Paisley Code used from 1966 AYR1 c6m 30ch 14 November 1966 1 September 1985 Paisley (P)
P Paisley Paisley interlocking AYR1 6m 30ch 1 September 1985    
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 1986
PK Kilwinning interlocking.  Code used from 1986
PU Gourock interlocking.  Code used from 1985
R Banner repeater signals
P Pangbourne   MLN1 41m 56ch 1893 9 May 1965 Reading (R)
PF Pantyffynnon   LLA 10m 1ch 1892    
P
KN Knighton points indicators
LO Llandeilo points indicators
LR Llandrindod Wells points indicators
LV Llandovery points indicators
LW Llanwrtyd points indicators
PR Par   MLN3 281m 69ch 1879    
PB Parbold   WBS3 24m 49ch 1877    
PD Unclear whether code used
P Parkeston   MAH 68m 63ch 1987    
P Parkeston [temporary panel]   MAH c68m 63ch 1 December 1985 1987 Parkeston (P)
PE Parkeston East   MAH       Parkeston (P)
PG Parkeston Goods Junction   MAH c68m 2ch   1 December 1985 Parkeston [temporary panel] (P)
PW Parkeston West   MAH c68m 63ch   1 December 1985 Parkeston [temporary panel] (P)
P Parkgate Codes used from February 1966 ECM5 44m 67ch   13 May 1972 Darlington (D)
U Up line automatic signals
P Parkgate Junction   TJC3   March 1902 July 1979 Sheffield (S)
P Parkhead North Junction Code used from 1960 ARG2 1m 72ch by 1903 28 July 1991 Yoker (YF)
PJ Park Junction   NWN 0m 54ch 1883    
D Park Lane Ground Frame HDT       Liverpool Street (L)
U
M Parks Bridge Junction   XTD 6m 17ch 30 June 1929 1976 London Bridge (L)
PS Park South   CBC1 33m 6ch 1883    
P Parkwood   MAC3 39m 45ch?   ?  
PH Parsons Heath   LTN1 c53m 0ch     Colchester (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   1886 3 July 1960 Hyndland (HY)
PS Parton Station Code used from 2008 CBC2 1m 41ch 1879    
PB Pass Of Brander Automatic "rock" signals, no control point in the usual sense OBN2        
P Pasture Street   MAC3 109m 49ch 1961    
  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 ? Church Fenton (CF)
TC Peckham Rye 'C'   BTH1 3m 45ch   13 April 1969 Bricklayers Arms Junction (F)
CAT 4m 79ch
PD Pegswood Believed closed before 1979 ECM7 c18m 70ch     Morpeth (M)
D Down line automatic signals
RU Repeater for up line automatic signals
U Up line automatic signals
P Pelaw   LEN3   2 October 1960 1981 Gateshead (G)
D Down direction automatic signals
U Up direction automatic signals
PS Pelham Street Signals to east of signal box SPD3 82m 28ch c1874 31 August 2008 (planned) Lincoln Control Centre (LG/BL/SL)
P Signals to west of signal box
PY Pembury and Burry Port   SWM2 228m 70ch 1907    
PE Penarth Curve East No 1 ground frame   BRY 0m 23ch 28 March 1966    
PN Penarth Curve North Reduced to ground frame 26 March 1966 RAD 0m 48ch   ? 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 10 April 2007 Port Talbot (PT)
EF Penge East   VIR 7m 12ch   1968 Victoria SC (VS)
KC Penge West   LBW 7m 19ch   21 August 1966 London Bridge (L)
PG Penistone Goods   MAC1 27m 67ch?   ?  
P Penistone (Huddersfield Junction)   PED1 28m 37ch 1888 9 April 1998 Barnsley (BY)
PEH 13m 42ch
PW Penistone West   MAC1 28m 27ch?   ?  
PE Penkridge   RBS3       Stafford No 4 (SD4)
PR Penmaenmawr   CNH3 228m 63ch 1952    
  Penyfford   WDB1 7m 41ch 1972    
PZ Penzance   MLN4 326m 32ch 24 April 1938    
PM Percy Main     5m 78ch from Newcastle   10 August 2980? 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     c1972 Peterborough (P)
PN Peterborough North   ECM1 c77m 4ch   c1972 Peterborough (P)
PF Petersfield   WPH1 54m 65ch c1880    
DPF Distant to controlled signal
WA Automatic signals
DWA Distant to automatic signal
CCV Pevensey   WJB 23m 3ch 1876    
  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)
PL Pickets Lock   BGK c9m 0ch   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)
PE Piccadilly East Temporary 'box CMP2 188m 45ch 21 December 1998 2 January 1999 Manchester Piccadilly (MP)
PR Picton Road   EWG       Liverpool Edge Hill (EH)
P Pilmoor Code used from naming Pilmoor.  Named Sessay Wood opening to 19 February 1943, then Pilmoor South to 15 May 1960 ECM5 c15m 27ch 12 March 1933 28 July 1985 Tollerton (T)
D Down line controlled and automatic signals (from opening to 15 May 1960)
D Down line automatic signals (from 15 May 1960 to 21 June 1971)
DF Down fast line automatic signals (from 19 September 1965)
DS Down slow line automatic signals (from 19 September 1965)
U Up line controlled and automatic signals (from opening to 15 May 1960).  Slow lines suffixed "S"
U Up line automatic signals (from 15 May 1960 to 21 June 1971).  Slow lines suffixed "S"
UF Up fast line automatic signals (from 21 June 1971)
US Up slow line automatic signals (from 21 June 1971)
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)
  Pinxton   PBS1 135m 47ch 24 January 1897 6 August 2007 East Midlands Signalling Centre (PK)
P Pirton Sidings Reduced to ground frame 10 March 1969 BAG2 70m 52ch 15 October 1933   Gloucester (G)
PT Pitlochry Code used from 2002 HGL2 28m 31ch 1911    
PT Pitsea   FSS2 26m 43ch 1960 8 April 1996 Upminster (UR)
U Up line automatic signals
PJ   TLL 32m 38ch
RPJ Repeater signals
P Plaistow   FSS1 4m 38ch ? 7 May 1960 (part);
1 May 1961 (remainder)		 Barking [LUL] (FF) (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   1967 Ashford (UE)
PY Plumley West   CDM2 18m 7ch 1908    
- Plumpton Gate box.  Controls signals 645 and 800.  Line controlled by Three Bridges (T) KJE1 44m 48ch 1891    
PN Plumpton   CGJ7 c56m 21ch   3 March 1973 Carlisle (CE)
  Plumpton Junction   CBC1 17m 58ch 1898 19 March 2000 Ulverston
PD Plumstead   NKL     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   MLN1 246m 48ch   30 June 1971 (last train)  
WBD Point Pleasant Junction   RDG1 5m 10ch 1889 16 September 1990 Wimbledon (W)
WA Automatic signals
WDZ Pokesdown   BML2 106m 32ch 27 April 1930 3 December 1972 Bournemouth (WFB)
PG Polegate   KJE3 19m 33ch 1883    
PH Polesworth   LEC2 106m 38ch   1991 Nuneaton (NN)
PN Pollokshaws North Reduced to ground frame 24 February 1974 GBK?   25 November 1900 15 June 1975 Glasgow Central (G)
  Polmaise   SCM3 116m 62ch 27 October 1905 ? Stirling Middle (SM)
P Polmont   EGM1 24m 60ch 12 March 1979    
PB Bo'ness interlocking area.  Code used from 1979
PJ Polmont Junction   EGM1   1872 12 March 1979 Polmont (P/PB)
P Pontefract East   WAG1 c57m 43ch   21 November 1968 Knottingley (K)
R Distant signals
P Pontrilas   HNL1 11m 14ch 1880    
PS
P Pontypridd   CAM 13m 9ch 1902 or 1907 19 October 1998 Radyr (VR)
PJ THT 13m 9ch
PO Poole Formerly Poole 'B' BML2 113m 75ch 1897    
WFC Poole 'A'   BML2 113m 51ch   15 November 1977 Poole (PO)
P Poppleton   HAY1 2m 75ch c1870    
  Porth   THT 16m 13ch 1981 19 October 1998 Radyr (VR)
  Portland Street   HXS3 18m 0ch   1994 Merseyrail (ML)
P Portobello Temporary panel
Unclear if this should be on site of Portobelo East		 ECM8 2m 68ch 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 by 1880 18 September 1967 Old Oak Common (OO)
CCF Portslade   BLI1 2m 79ch by 1910 1988 Lancing (LG)
PW Portsmouth   WPH2 44m 29ch 7 April 1968 5 February 2007 (in part);
29 October 2007 (remainder)		 Portsmouth Harbour temporary 'box (PH) (in part); Havant (HT) (remainder)
WA Automatic signals
QW Portsmouth Harbour   WPH2 45m 20ch 1 June 1936? 21 August 1941 Portsmouth Harbour temporary panel (QW)
QW Portsmouth Harbour temporary panel   WPH2   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   WPH2 45m 24ch 5 February 2007 29 October 2007
(originally planned 19 March 2007)		 Havant (HT)
PW Portsmouth Yard   WPH2 44m 32ch by 1906 7 April 1968 Portsmouth (PW)
PS Port Sunlight Sidings Originally named Lever Brothers Sidings CRR2 c11m 35ch 1902 November 1986 Rock Ferry (RF)
PT Port Talbot   SWM2 202m 49ch 22 September 1963    
DD Down Swansea District 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)
P Possilpark   MRL1   ? 6 March 1977 Cowlairs (CE)
PC Potteric Carr   ECM1 c153m 78ch ? ? Doncaster (D)
PB Potters Bar   ECM1 c12m 61ch   ? Kings Cross (K)
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 No 3   PBN 14m 44ch 1896    
PJ Pouparts Junction   VTB1 2m 8ch by 1899 12 October 1952 Clapham Junction 'B' (EC)
PH Power House   CWJ 7m 27ch   1988? Willesden Suburban (WS)
RPH Repeater signals
PS Pratts Sidings Shunt Frame   SCQ1   c1868 9 April 1972 Stoke on Trent panel (SE)
PS Prees   SYC 18m 40ch 1881    
PT Prescot   SBH1 1m 57ch 1954    
PN Prestatyn At least 2 signals CNH3 205m 52ch 1897    
PN Preston   CGJ6 0m 41ch 22 October 1972    
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   VTB3 49m 39ch   17 March 1985 Three Bridges (T)
  Prestwich   MVB2 4m 34ch   August 1991 Manchester Metrolink
P Prestwick   AYR6 37m 27ch ? 7 April 1985 Ayr (A?)
P Prince of Wales
(also had draw-ahead signals in colliery sidings lettered A to E, with no number)		   CPM1 56m 66ch 1912    
POW Unclear whether code used
PE Princes End   PRN     1965?  
P Princes Risborough   NAJ2 24m 50ch 1907 2 March 1991 Marylebone (ME)
PH Proof House Junction   RBS1 112m 24ch   4 June 1966 Birmingham New Street (NS)
PE Prudhoe Code from 6 April 2002 NEC2 10m 49ch 1872    
P Original code
PH Pulborough   TBH1 49m 74ch 1878    
P Purfleet   TLL 16m 7ch 26 October 1924 25 May 1996 Upminster (UR)
CU Purley   VTB2 13m 41ch 8 May 1955 14 January 1984 Three Bridges (T)
BP Puxton & Worle Downgraded to gate box 29 January 1972; also controls Huish.  Controls 4 signals total.  Main line controlled by Bristol (B) MLN1 134m 0ch 1916    
  Pwllheli West   DJP 132m 57ch 1907    
PW Pyle West   SWM2 196m 51ch 7 March 1947 11 September 1965 Port Talbot (PT)
PR Pyewipe Road   PYE2 4m 20ch 1958    

Introduction A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Non-National Rail

 

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