Signal box prefix codes

A (hopefully) comprehensive listing

'Boxes beginning L

Last update 6 November 2009

To see the railway index, please click here ----->>.

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
BSC Lackenby No 2 Grid   DSN2   ?    
LG Ladbroke Grove   MLN1 1m 65ch 1927 18 September 1967 Old Oak Common (OO)
L Ladybank Junction Formerly Ladybank North ECN2   29 September 1888 12 October 1980 Edinburgh (EB)
EB Temporary code until area taken over by Edinburgh
LA Laindon   FSS2 22m 68ch   4 June 1995 Upminster (UR)
D Down direction automatic signals
DE At least one down direction controlled signal set within several automatic signals
U Up direction automatic signals
L Laira Junction   MLN1 244m 2ch   10 November 1973 Plymouth (P)
LE Laisterdyke East   LBE2     11 July 1970 Hammerton Street (HS)
L Lakenheath   ETN 82m 49ch 1885    
LH
LR Lancaster No 1   CGJ7       Preston (PN)
CCD Lancing Original code to 1988 BLI1 8m 15ch 15 June 1963    
LG Code from 1988 when new panel installed
LS Landor Street   DBP3 40m 64ch   23 August 1969 Saltley (SY)
  Lane Head Gate box: line controlled by Low Row (LR) NEC2 45m 38ch ?    
  Langham Junction   GSM2 95m 5ch 27 October 1890    
L Langley   ECM1 c26m 50ch   29 February 1976 Hitchin (HT)
LG Langley Green   GSJ2 134m 46ch   ? Stourbridge Junction (SJ)
L Langworth   NOB3 35m 29ch 1890    
LJ Lansdown Junction   BAG2 86m 73ch   23 November 1968 Gloucester (G)
LH Lapworth   DCL 116m 36ch   30 August 1969 Saltley (SY)
LJ Larbert Junction Code used from 2001 SCM3 109m 41ch 1881 14 May 2007
(delayed from 26 September 2006)		 Larbert North (LN)
LN Larbert North Code used from 2002 SCM3 110m 30ch 19 October 1892    
  Larbert South   SCM3 ? 24 January 1892 25 February 1973 Larbert North (LN)
  Largin   MLN3 270m 1ch   ? Lostwithiel (LL)
L Larkfield Junction   WCM2 c100m 60ch 22 March 1908 25 February 1973 Glasgow Central (G)
  Latchmere Junction   CKL 2m 64ch by 1905 24 April 1983 Victoria SC (VC)
LK Laurencekirk Code used from 2002 ECN5 210m 62ch 28 December 1910    
  Lawrence Hill   BSW 1m 6ch 1890 22 March 1970 Bristol (B)
LE Leagrave   SPC1 32m 55ch   31 May 1980 West Hampstead (WH)
RLE Banner repeater signals
LN Leamington North   DCL 106m 24ch   1980s Leamington Spa (LN)
LN Leamington Spa Original code DCL 106m 14ch 1985    
OL Oxford-Leamington section (code used from 4 May 2004)
  Leasowe   CWK3 5m 61ch 1938 21 August 1994 Merseyrail (ML)
CBH Leatherhead   BTH3 17m 74ch   1990 Wimbledon (W)
CA Automatic signals
D Distant signals
  Lebberston Road Gate box: line controlled by Seamer West (SW) HBS 46m 72ch ?    
L Ledbury   WAH 136m 6ch 1885    
LD Reported, but unclear if carried on signals
L Leeds   HUL4 20m 47ch 1 May 1967 19 August 2001 (part);
16 June 2002 (remainder)		 York (L)
D Down line automatic signals
DV Down viaduct line automatic signals
E Signal at Wintersett
(may be a grafittied "L" plate)
R Repeater signals
RL Some banner repeater signals
RU Banner repeater to up line automatic signals
U Up line automatic signals
UV Up viaduct line automatic signals
WST Notice board at Wintersett
E Leeds East   HUL4 c20m 28ch 5 April 1937 30 April 1967 Leeds (L)
P Leeds Parcels Concentration Depot Shunt signals         Line closed?
PD
W Leeds West   DOL2 c185m 50ch 5 April 1937 30 April 1967 Leeds (L)
  Leek Brook Junction Disused since 8 February 1989 SCQ2 6m 58ch 1872 21 August 1993  
CVL 17m 50ch
LR Leicester Code introduced 1987 SPC5 99m 30ch 29 June 1986    
X "Creep" signals at Kettering
  Leigh   NSS 10m 24ch ? 11 July 1999 Caverswall (CL)
LE Leigh-on-sea   FSS2 32m 30ch   9 July 1995 Upminster (UR)
LN Leighton Buzzard No 1   LEC1 c40m 5ch     Bletchley (BY)
L Leighton Buzzard No 2   LEC1 c40m 22ch   3 July 1965? Bletchley (BY)
EBC Lenham Code used from opening SBJ 49m 7ch 23 July 1961 28 April 1984 Maidstone East (ME)
LS Lenton South Junction   TSN1 c125m 30ch     Trent (TT)
LE Lenzie   EGM   ? 13 December 1971 Greenhill Junction (GJ)
LE Leominster   SHL 38m 60ch 1875    
L Lesmahagow Junction   WCM2 89m 49ch 2 February 1913 17 December 1972 Motherwell (M)
LE Letchworth   SBR c34m 65ch     Kings Cross (K)
LE Leuchars   ECN2 50m 79ch 1920    
L Lewden Crossing   PED2 7m 26ch?   ?  
LW Lewes   KJE1 50m 3ch 1888    
LC Lichfield City   BJW3 16m 61ch   12 October 1992 Aston (AN)
TV Lichfield Trent Valley Junction   BJW3 18m 13ch 1897    
LD Lichfield Trent Valley Low Level   LEC2 116m 23ch 1911 27 May 2008 Rugby Signalling Centre (LS/NL)
LDR Banner repeater signals
LN New code from 11 December 2007
LN Lidlington Thought that code not carried on signals BBM 8m 49ch   6 September 2004 Marston Vale (MV)
L Lightmoor Junction   MJI1 160m 15ch 1951 23 October 2006 Madeley Junction (MJ)
LK Lime Kiln Sidings Downgraded to Gate Box; out of use since about 14 December 1997 WVL 6m 14ch 1887 30 November 2007 Park Junction (PJ)
LH Limestone Hall Gate Box: line controlled by Silecroft (ST) CBC1 47m 44ch      
  Limpley Stoke Out of use for long time before closure BFB 4m 24ch 25 April 1910 24 August 1969 Bathampton (BH)
BL Lincoln Control Centre Barnetby to Lincoln SPD3 c83m 29ch 1 September 2008    
LG Lincoln to Gainsborough
NL Newark to Lincoln
SL Spalding to Lincoln
HS Lincoln High Street   SPD3 82m 49ch 1874 31 August 2008 Lincoln Control Centre (LG)
  Lincoln Road [Enfield] Gate box from 26 November 2001: line controlled by Liverpool Street (L) ENT 10m 25ch ?    
LR Lincoln Road [Retford]   ECM1     24 October 1976 Retford (RD)
LS Lincoln Street Crossing   RAC 127m 60ch 1916 29 September 2001 Trent (TT)
CT Lindsey Oil Terminal Control Tower     c103m 53ch by 26 October 1967    
- Lingfield   HGG1 26m 15ch   11 July 1987 Oxted (OD)
  Lingwood Gate box: line controlled by Brundall Junction (BL) NAY 8m 2ch ?    
LD Liskeard Junction   MLN3 264m 66ch 1915    
RW Liss   WPH1 51m 40ch   16 February 1975 Petersfield (PF)
  Little Barford CEGB   ECM1 49m 69ch   ? Peterborough (P)
PN Littleborough Temporary block post MVN2 c14m 40ch 9 February 1985 19 August 1985 Preston (PN) and Smithy Bridge (SB)
SB
LB Little Bytham   ECM1 c92m 18ch     Peterborough (P)
  Littlefield   MAC3 108m 73ch 1884 September 1993 Pasture Street (P)
LH Littlehampton   BLI2 61m 69ch 1886    
LHY Littlehampton depot sidings
CA Automatic signals
LH Littlehaven Downgraded to Gate Box: line controlled by Horsham (CBP) TBH1 36m 49ch 1938    
LT Unclear whether code used
L1 Little Ilford No 1   FSS2 6m 47ch ? ?  
FRL1 Fog repeater signals
L2 Little Ilford No 2   FSS2 6m 69ch ? 10 April 1961 Barking (BK)
FRL2 Fog repeater signals
LM Little Mill Code used from September 1961 ECM7 c39m 33ch   15 April 1978 Alnmouth (A)
D Down line automatic signals
U Up line automatic signals
LM Little Mill Junction   HNL1 30m 52ch 1883    
DH Down Hereford line automatic signals
UH Up Hereford line automatic signals
L Littleport   BGK 75m 76ch 1882    
  Little Steeping   GRS3 120m 20ch   c11 March 1989 Bellwater Junction (BJ)
X Littleton Colliery Draw ahead signals         Stafford No 4 (SD4)?
(or line closed?)
- Littleworth   WEB 87m 60ch 1875    
  Littons Mill Crossing   SDJ2 11m 45ch 1890    
EH Liverpool Edge Hill Original code WJL3 191m 75ch 28 August 1961    
LE Later code from c1985 DSE 1m 57ch
LS Liverpool Lime Street   WJL4 193m 37ch 25 January 1948    
L Liverpool Street   LTN1 0m 22ch 11 September 1949 2 April 1989 Liverpool Street (L)
DE Down electric (through) line automatic signals
DM Down main (local) line automatic signals
DS Down suburban line automatic signals
US Up suburban line automatic signals
L Liverpool Street   LTN1 0m 22ch 2 April 1989    
S North London Lines (ex-Stratford)
DS Down Southend line automatic signals
R Some banner repeater signals (most used R suffix)
US Up Southend line automatic signals
LW Liverpool Street West   LTN1     25 September 1949? Liverpool Street (L)
LL Llandaf Loop Junction   CAM 4m 37ch 1900 May 1998 Radyr (VR)
  Llandarcy   SDI2 0m 37ch 1920    
LJ Llandilo Junction
(also known as Llandeilo Junction)		   SWM2 223m 50ch   28 September 1986 Pantyfynnon (P)
LJ Llandudno Junction   CNH3 223m 55ch 1985    
LS Llandudno Station Code not carried LLJ 3m 0ch 1891    
LR Llanidloes Road Gate box: line controlled by Machynlleth (MH) SBA2 52m 70ch ?    
  Llanelli West Gate box: line controlled by Port Talbot (PT).  "Slots" signals 247, 286 SWM2 225m 29ch 1877    
  Llanfairpwl Gate box: line controlled by Bangor (BR).  Nameboard has Llanfair P G CNH3 242m 22ch 1871    
- Llanrwst   LJT1 11m 8ch 1880    
LJ Llantarnam Junction   HNL1 36m 26ch   ? Newport (N)
LE Llantrisant East   SWM2 181m 43ch 1966? ? Cardiff (C)
LW Llantrisant West Downgraded to ground frame 23 April 1966 SWM2 181m 76ch 1966 ? Cardiff (C)
  Llanwern   SWM2 154m 70ch by 1920 17 April 1961 East Usk (EU or U)
L Lockerbie Code used from 1971 WCM1 25m 58ch 18 January 1892 29 April 1973 Motherwell (MC)
LS Lockes Siding   MVN2     28 February 1982 Wakefield Kirkgate East (WE)
LL Lock Lane Crossing Gate box from 29 September 1969: line controlled by Trent (TT) SSJ1 120m 30ch January 1957    
LW Lockwood Formerly Lockwood No 2 PEH c1m 35ch   1968 Huddersfield (HU)
WC Loco Junction   BML1 2m 1ch 8 September 1918 16 June 1974 Queens Road [London] (WD)
  Lodge Farm Crossing   BTH3 25m 38ch   ? Holmwood (CBL)
LN Lofthouse North   DOL2 c178m 44ch   28 November 1970 Wakefield Westgate North (WN)
LO Lolham   ECM1 c83m 33ch   12 April 1975 Tallington (T)
L London Bridge   LBW 0m 13ch 19 July 1975    
LBC 0m 13ch
XTD 2m 2ch
E London Bridge Eastern Formerly London Bridge to 19 July 1975 LBW 0m 20ch 17 June 1928 15 April 1976 London Bridge (L)
A Automatic signals LBC 0m 20ch
R1D Distant signals XTD 2m 9ch
R2D
LR London Road Junction   SPC4 98m 74ch   29 June 1986 Leicester (LR)
LR London Road Junction   SPC7 128m 23ch   12 July 1969 Derby (DY)
SPC8 127m 54ch
DBP 0m 0ch
LG Longannet   KNE1 5m 62ch 9 September 1969    
L
S Longannet SSEB control room            
L Longbeck Gate box before 1932.  Code used from 8 February 1970 DSN3 25m 32ch 1932    
  Longbridge East Downgraded to shunt frame 27 April 1997 HND1 0m 26ch 12 November 1916    
  Longbridge Shunt Frame   BAG2 49m 21ch ?    
LE Long Eaton Town Crossing   TCC c120m 52ch   18 October 1969 Trent (TT)
EN Longfield Renamed from Fawkham 1961 VIR c22m 58ch   1965 Victoria SC (VS)
A Automatic signals
LF Longforgan Code used from 2002 SCM5 5m 55ch 1929    
OC Longhedge Junction   FLL1 1m 64ch 1890 23 July 1978 Stewarts Lane (S/SL)
LT Longhirst Downgraded to gate box 12 November 1978.  Code used from December 1962 ECM7 20m 17ch   March 1979 Morpeth (M)
D Down line automatic signals
U Up line automatic signals
LH Longhoughton Code used from September 1961 ECM7 c37m 60ch     Alnmouth (A)
D Down line automatic signals
U Up line automatic signals
LL Long Lane   LEN3 46m 34ch 1873 29 November 1997 Low Gates (LG)
D Down line automatic signals
U Up line automatic signals
CS Longsight Carriage Maintenance Depot Depot shunt signals CMP2 ?? ??    
LT Longsight No 1   CMP2       Manchester Piccadilly (MP)
LT Longport Junction   CMD2 16m 71ch 1939 18 May 2002 Stoke on Trent (SOT)
LN Longtown Junction           Carlisle (CE)
LG Longwood Goods   MVL3       Huddersfield (HU)
LL Lostwithiel   MLN3 277m 34ch 1893    
LH Loughborough   SPC5 c111m 58ch   12 April 1987 Leicester (LR)
U Loughborough Junction   HHH 3m 37ch c1870 29 November 1981 Victoria SC (VS)
A Automatic signals
LM Lowdham   NOB1 7m 26ch 14 June 1896    
LE Low Ellers Unclear if code carried BKS c16m 0ch   20 May 1979 Decoy No 1 (DY)?
or Doncaster (D)?
L Lowestoft   NOL 23m 23ch 1885    
LF Low Fell   ECM5     20 April 1963 Tyne Yard (TY)
LFS Low Fell Sidings Downgraded to ground frame 20 April 1963 BLF       Tyne Yard (TY)
L Lowfield   BON c7m 0ch   ?  
LJ Lowfield Junction   PED5 17m 48ch   1980? Sheffield (S)
LG Low Gates   LEN3 43m 25ch 1956    
LB Former Boroughbridge Road signals
U Up line automatic signals
LH Low House Crossing   SAC 299m 55ch 1900    
LM Low Moor Formerly Low Moor No 2 MRB c37m 39ch   20 July 1986 Mill Lane Junction (M)
LR Low Row   NEC2 46m 24ch 1874 6 April 2009 Low Row [new]
LR Low Row [new]   NEC2 46m 19ch 6 April 2009    
L Low Street   TLL 24m 11ch   8 April 1996 Upminster (UR)
LR Lucker Code used from March 1961 ECM7 49m 17ch   20 August 1978 Chathill (CL)
CL Temporary code for 1 day until transferred to Chathill
D Down line automatic signals
U Up line automatic signals
LU Lugton Code used from 2002 GBK 13m 50ch 5 May 1929    
GL Lydney Gate box: line controlled by Newport (N) and Gloucester (G) SWM2 133m 41ch 1918   South Wales Signalling Centre (NT) (planned)
LY Lydney Downgraded to ground frame: line controlled by Newport (N) SWM2 133m 21ch ?   South Wales Signalling Centre (NT) (planned)
WDX Lymington Junction   BML2 93m 65ch by 1900 17 October 1978 Brockenhurst (BH)
RWA Distant to automatic signals
WA Automatic signals
CCS Lyminster Crossing   BLI1 18m 1ch by 1907 22 January 1980 Arundel (AR)
B Lynemouth Alcan Bunker line signals
(also had draw-ahead signals lettered A to D, F, H, J with no number)		 BWC 6m 12ch 1956    

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

 

Site Counter visits to the Signalling pages since 5th February 2007
Bpath Counter