Last update 6 January 2009
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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
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 |
|---|---|---|---|---|---|---|---|
| WM | Waddon Marsh | CMJ | 1982 | Victoria SC (VC) | |||
| EBG | Wadhurst | TTH | 39m 25ch | 1893 | 1986 | Tonbridge (PE) | |
| WY | Wadsley Bridge | MAC3 | 38m 43ch? | ||||
| W | Wainfleet | GRS4 | 4m 15ch | 1899 | |||
| K | Wakefield Kirkgate | MVN2 | 47m 76ch | 25 April 1982 | 27 December 2007 | Wakefield Kirkgate [new] (K) | |
| K | Wakefield Kirkgate [new] | MVN2 | 47m 69ch | 27 December 2007 | |||
| WK | Former Oakenshaw area signals | ||||||
| WE | Wakefield Kirkgate East | MVN2 | c47m 76ch | 25 April 1982 | Wakefield Kirkgate (K) | ||
| WW | Wakefield Kirkgate West | MVN2 | 25 April 1982 | Wakefield Kirkgate (K) | |||
| WN | Wakefield Westgate North | DOL1 | c176m 0ch | Leeds (L) | |||
| WS | Wakefield Westgate South | DOL1 | c175m 50ch | 28 November 1970 | Wakefield Westgate North (WN) | ||
| WN | Walkden | WBS1 | 7m 33ch | 1888 | |||
| Walnut Tree Junction | CAM | 7m 20ch | c1910 | 27 January 1997 | Radyr (VR) | ||
| WL | Walsall | BJW1 | 0m 59ch | 6 December 1965 | |||
| RWL | Banner repeater signals | ||||||
| WLR | Repeater signals | ||||||
| WD | Walsall Yard | Formerly Walsall No 1 to 26 March 1966 | BJW2 | Walsall (WL)? | |||
| WX | Waltham Cross | BGK | 11 January 1969 | Liverpool Street (L) | |||
| WA | Walton | ECM1 | 78m 52ch | 22 March 1971 | Peterborough (P) | ||
| PMJ | 19m 76ch | ||||||
| WJ | Walton Junction | SJO2 | 3m 35ch | 1903 | 10 February 1994 | Merseyrail (ML) | |
| WJK | 33m 1ch | ||||||
| WDM | Walton On Thames | BML1 | 17m 16ch | by 1906 | 22 March 1970 | Surbiton (S) | |
| WS | Walton Street Junction | Reduced to gate box 30 March 1980 | HBS | 1m 29ch | Hessle Road Junction (HR) | ||
| RWS | Distant signals | ||||||
| WR | Wantage Road | MLN1 | 60m 21ch | 7 October 1932 | 30 May 1965 | Reading (R) | |
| UM | Up main line automatic signals | ||||||
| W | Wardley | FEP | 19m 76ch | 1954 | July 1997 | ||
| WA | Ware | Codes used from 24 January 1960 | HEB | 22m 21ch | 1960 | 27 May 2003 | Liverpool St (L) |
| RWA | Repeater signals | ||||||
| WR | Wareham | BML2 | 120m 63ch | 25 March 1928 | |||
| WFL | Warminster | SAL | 114m 40ch | 19 June 1904 | 3 June 1979 | Westbury (W) | |
| WM | Warnham | BTH3 | 33m 50ch | 1877 | 22 August 2005 | Three Bridges (T) | |
| WN | Warrington | CGJ3 | 182m 5ch | 4 September 1972 | |||
| R | Repeater signals | ||||||
| WC | Warrington Central | MAJ | 18m 34ch | 1973 | |||
| WR | Warwick Road | CDM1 | c2m 32ch | Manchester Piccadilly (MP) | |||
| WH1 | Washwood Heath No 1 | DBP3 | 39m 62ch | 1899 | |||
| WW1 | Unclear whether code used | ||||||
| WH2 | Washwood Heath No 2 | DBP3 | 39m 45ch | Washwood Heath No 1 (WW1)? | |||
| WH3 | Washwood Heath No 3 | DBP3 | 39m 20ch | Washwood Heath No 1 (WW1)? | |||
| WH4 | Washwood Heath No 4 | Details presumed | DBP3 | Washwood Heath No 1 (WW1)? | |||
| WH5 | Washwood Heath No 5 | DBP3 | c39m 18ch | Washwood Heath No 1 (WW1)? | |||
| WB | Wateringbury | PWS1 | 39m 72ch | 1893 | |||
| Waterloo | HXS3 | 5m 39ch | 1881 | 11 March 1994 | Merseyrail (ML) | ||
| WB | Waterloo | Code to 1989/90 | BML1 | 0m 17ch | 18 October 1936 | 30 September 1990 | Waterloo [temporary panel] (WO) |
| WO | Code from 1989/90 | ||||||
| WA | Automatic signals | ||||||
| WO | Waterloo [temporary panel] | BML1 | 30 September 1990 | 21 April 1991 | Wimbledon (W) | ||
| W | Waterloo [Waterloo & City] | DRN | c0m 8ch | 11 July 1898 | 1993 | Waterloo [Waterloo & City] (WK) | |
| A | Automatic signals | ||||||
| WK | Waterloo [Waterloo & City] | In former staff gymnasium | DRN | c0m 8ch | 1993 | Transferred to London Underground 1 April 1994 | |
| WL | Waterloo Loop | NWL | 0m 20ch | 27 November 1961 (or 9 December 1962?) |
after 1970 | Newport (N) | |
| TM | Waterloo Tunnel Mouth | EWG | c0m 62ch | Liverpool Edge Hill (EH) | |||
| WL | Watery Lane | Downgraded to ground frame 14 August 1965: line controlled from Wolverhampton (WN) | RBS2 | 7m 75ch | 1942 | ||
| WD | Watford | LEC1 | Watford Junction (WJ) | ||||
| HS | Watford High Street | CWJ | 16m 50ch | 1988? | Willesden Suburban (WS) | ||
| RWF | Repeater signals | ||||||
| WJ | Watford Junction | LEC1 | 17m 24ch | July 1964 | 7 June 2004 (in part) | Rugby Signalling Centre (WT/TK) | |
| R | Banner repeater signals | ||||||
| WD3 | Watford No 3 | WSA | c0m 20ch | November 1973 | Watford Junction (WJ) | ||
| WF | Watford No 4 | CWJ | 17m 38ch | 1988? | Willesden Suburban (WS) | ||
| RWF | Repeater signals | ||||||
| W | Wath Central Station | PED4 | 13m 45ch | 1907? | 1988 | ||
| WH | Wath Station | PED3 | 12m 45ch? | ||||
| E | Waverley East | Code used from 1938 | ECM9 | 0m 21ch | 6 November 1938 | 30 January 1977 | Edinburgh (E) |
| W | Waverley West | Code used from 1936 | ECN1 | 0m 13ch | 11 October 1936 | 14 November 1976 | Edinburgh (E) |
| EH | Wavertree | Temporary code used from 1960 until 'box closed | WJL3 | Edge Hill (EH) | |||
| WJ | Weaver Junction | CGJ1 | 174m 41ch | 13 March 1961 | Winsford (WD) | ||
| W | Weaverthorpe | YMS | 32m 69ch | 1873 | |||
| WJ | Weddington Junction | AJW | 0m 59ch | ||||
| WY | Wednesbury | DPJ | 3m 26ch | March 1993 | |||
| Weeton | PBN | 10m 9ch | Poulton No 3 (PT) | ||||
| Welbeck Colliery Junction | HIM | 13m 20ch | 1915 | Clipstone (C) | |||
| WL | Welling | BEX | 1 November 1970 | Dartford (D) | |||
| WN | Wellington | Formerly Wellington No 2 | WSJ2 | 161m 21ch | 20 March 1953 | 16 December 2002 | Madeley (MJ) |
| Wellowgate | MAC3 | 109m 14ch | September 1993 | Pasture Street (P) | |||
| W | Welton | Gate box: line controlled by Brough East (B) | HUL1 | 9m 35ch | 1904 | ||
| WC | Welwyn Garden City | ECM1 | c20m 41ch | Kings Cross (K) | |||
| W | Welwyn North | ECM1 | c21m 70ch | 14 September 1973 | Welwyn Garden City (WC) | ||
| WM | Wem | SYC | 21m 53ch | 1883 | |||
| WB | Wembley | CWJ | 8m 4ch | 1913? | 1988? | Willesden Suburban (WS) | |
| RWB | Repeater signals | ||||||
| WD | Wembley Depot | 8 July 2005 | |||||
| WM | Wembley Main Line | LEC1 | 6m 40ch | 9 July 2000 | |||
| X | Draw ahead signals | ||||||
| WS | Former Willesden Suburban signals | LLG | 1m 74ch | 18 July 2005 | |||
| WY | Wembley Yard | LLG | 1m 72ch | 28 November 1993 | |||
| UHL | 2m 12ch | ||||||
| Wennington Junction | SKW1 | 249m 42ch | 1890 | 14 January 2006 | Carnforth Station Junction (CS) and Settle Junction (SJ) | ||
| U | Wendover | Up direction automatic signals | MCJ2 | 34m 14ch | 1889 | 1 July 1984 | Marylebone (M)? |
| RU | Repeaters to up direction automatic signals | ||||||
| WW | Wentworth Junction | PED2 | 3m 73ch? | ||||
| WJ | Werrington Junction | ECM1 | 79m 34ch | Peterborough (P) | |||
| WB | West Burton | MAC3 | 71m 40ch | 1965 | |||
| W | Westbury | WEY | 109m 50ch | 13 May 1984 | |||
| DA | Down Athelney line automatic signals | ||||||
| DM | Down main line "set back" indicators | ||||||
| DS | Down East Somerset line automatic signals | ||||||
| DS | Down Salisbury line "set back" indicators | ||||||
| DT | Down Trowbridge line automatic signals | ||||||
| DW | Down Westbury line automatic signals | ||||||
| US | Up East Somerset line automatic signals | ||||||
| UT | Up Trowbridge line automatic signals | ||||||
| UW | Up Westbury line automatic signals | ||||||
| WU | West Byfleet | BML1 | 21m 63ch | by 1901 | 22 March 1970 | Surbiton (S) | |
| WC | West Calder | Code used from 1981 | EGS | c18m 14ch | 28 June 1889 | 23 November 1981 | Edinburgh (EJ) |
| NC | West Croydon 'A' | Believed renamed West Croydon, probably in 1981 | NFE | 10m 18ch | 8 April 1984 | Three Bridges (T) | |
| WC | West Croydon 'B' | NFE | 1981 | West Croydon 'A' (NC) and Victoria SC (VC) | |||
| WD | West Drayton East | MLN1 | 13m 11ch | 25 May 1936 | 9 February 1964 | Slough (S) | |
| WE | West Ealing | MLN1 | 6m 56ch | Old Oak Common (OO) | |||
| XE | Westenhanger | XTD | 64m 12ch | 1968 | Ashford (UE) | ||
| W | Westerfield Junction | ESK | 72m 23ch | 1912 | 14 March 1999 | Colchester (CO) | |
| Westerleigh East | SWB | 106m 29ch | 1 July 1942 | 8 May 1971 | Bristol (B) | ||
| WW | Westerleigh West | Codes used from 19 January 1970 | SWB | 107m 7ch | 1 May 1903 | 8 May 1971 | Bristol (B) |
| DB | Down Badminton line automatic signals | ||||||
| UB | Up Badminton line automatic signals | ||||||
| W | Westerton | Formerly Milngavie Junction. Code used from 1959 | NEM5 | 1900 | 21 October 1990 | Yoker (YH) | |
| FE | Westgate on Sea | VIR | 72m 43ch | 1972 | Margate (GE) | ||
| W | West Ham | FSS1 | 4m 15ch | 1 May 1961 | Fenchurch Street (F) | ||
| WH | West Hampstead | SPC1 | 4m 0ch | 21 October 1979 | |||
| RWH | Banner repeater signals | ||||||
| R | |||||||
| WH | West Holmes | SPD3 | 83m 29ch | 1882 | 31 August 2008 (planned) | Lincoln Control Centre (LG/NL) | |
| WK | West Kilbride | Code used from 1978 | LGS2 | 1878 | 25 January 1981 | Paisley (PK) | |
| West Kirby | CWK3 | 10m 36ch | 1932 | 18 September 1994 | Merseyrail (ML) | ||
| WE | West London Junction | BML1 | 3m 17ch | 11 February 1912 | 25 May 1990 | Wimbledon (W) | |
| West Malling | SBJ | 34m 61ch | 1882 | 9 December 1983 | Maidstone East (EBX) | ||
| CB | West Midlands Signalling Centre | Coventry to Birmingham | DBP3 | 40m 38ch | 29 August 2007 | ||
| CN | Coventry to Nuneaton | ||||||
| HS | Hatton to Stratford | ||||||
| LC | Leamington Spa to Coventry | ||||||
| LJ | Leamington Spa to Jewellery Quarter | ||||||
| RC | Rugby to Coventry | ||||||
| TB | Tyseley to Bearley Junction | ||||||
| WM | Used between Birmingham Moor St and Jewellery Quarter | ||||||
| CFE | West Norwood Junction | Short-lived temporary code | BBJ | 13 April 1969 | Victoria Central (VC) | ||
| GG | West Of Scotland Signalling Centre | New interlockings (Glasgow Central and approaches) | SGN | 27 December 2008 (planned) | |||
| G | All other former Glasgow Central Signaling Centre signals | ||||||
| Weston Rhyn | WSJ2 | 191m 40ch | 1924 | Gobowen North (GN) | |||
| Weston Super Mare East | WSM | 137m 22ch | 1866? | 29 January 1972 | Bristol (B) | ||
| WP | West Parade | HBS | c0m 50ch | 30 March 1980 | Hessle Road Junction (HR) | ||
| WR | West Ruislip | NAJ2 | 1m 68ch | 1905 | 13 August 1990 | Marylebone (ME) | |
| WS | West Silkstone Junction | PED2 | 1m 36ch? | 1981 | |||
| WT | West Thurrock Junction | TLL | 18m 74ch | 8 April 1996 | Upminster (UR) | ||
| UPG | 6m 46ch | ||||||
| WD | Westwood | ECM1 | c77m 40ch | 20 March 1971 | Spital Junction (SJ) | ||
| WS | Wetmore Sidings | DBP1 | 9m 49ch | 12 June 1949 | 13 October 1985 | Derby (DY) | |
| WS | Weybridge | BML1 | 19m 25ch | by 1903 | 22 March 1970 | Surbiton (S) | |
| WW | Wharncliffe Wood | MAC3 | 34m 60ch? | 1981? | |||
| WN | Whifflet North Junction | SCM2 | 22 November 1891 | 16 December 1973 | Motherwell (M) | ||
| Whissendine | GSM2 | 99m 14ch | 10 November 1940 | ||||
| WH | Whitchurch | Box only open for emergency working, engineering work or S & T testing. Box switched out at all other times. | SYC | 13m 35ch | 1897 | ||
| EN | Whitechapel | CDT | c1m 77ch | 1907 | |||
| WBP | White Hart Crossing | RDG1 | 7m 65ch | Wimbledon (W) | |||
| W | Whitehouse | DSN2 | 15m 77ch | 1874 | |||
| W | Whitland | SWM2 | 258m 68ch | 1972 | |||
| TY | Tenby point indicators | ||||||
| Whitley Bridge | Downgraded to gate box 24 October 1968 | WAG1 | 62m 58ch | 1875 | 28 February 1988 | Sudforth Lane (S) | |
| WH | Whitlingham Junction | NOL | 1m 69ch | 1909 | 26 June 2000 | Trowse Swing Bridge (TB) | |
| WJ | |||||||
| BE | Whitstable | VIR | 58m 79ch | June 1968 | Margate (GE) and Faversham (EY) | ||
| W | Whittington | CHR | Sheffield (S) | ||||
| Whittington Low Level | WSJ2 | 187m 67ch | Gobowen North (GN) | ||||
| WH | Whittlesea | EMP | 94m 55ch | 1887 | |||
| W | |||||||
| Whitwell | Code unknown, but known to have been used from 1966 | FEP | 6m 29ch | 1991 | |||
| Whitwell | PSE | 150m 45ch | 1893 | Elmton & Creswell Junction (E/EC) | |||
| W | Whitwood | NOC | 22m 4ch | 1890 | September 1997 | Castleford (CD) | |
| MEW | 0m 1ch | ||||||
| W | Whixley | Gate box: line controlled by Cattal (C) | HAY1 | 11m 8ch | |||
| Whyke Road | TBH | 27m 70ch | 1900 | 1 December 1985 | Chichester (CC) | ||
| CM | Whyteleafe South Crossing | Code from 1983 | PAT | 18m 20ch | |||
| WL | Downgraded to gate box 1982: line now controlled by Three Bridges (T). Controls signals T564, T565, T566, T567 | ||||||
| DC | Wick | Down Charfield line automatic signals | BGL2 | 110m 30ch? | 4 November 1951 | 13 October 1968 | Wickwar |
| W | Wickenby | NOB3 | 30m 54ch | 1890 | |||
| W | Wickford | Code in use by 1991 | SSV | c29m 10ch | 1889 | 21 August 1993 | Liverpool St (L) |
| DS | Down Southend line automatic signals | ||||||
| US | Up Southend line automatic signals | ||||||
| Wickham Siding | PWS2 | c32m 0ch | 1970 | Strood Junction (EQ)? | |||
| Wickwar | BGL2 | 115m 15ch | 4 October 1908 | 2 November 1965 | Rangeworthy | ||
| W | Widdrington | ECM7 | 23m 22ch | 17 August 1980 | Chevington (CN) | ||
| D | Down line automatic signals | ||||||
| WN | Widdrington North | 'Box reused from Stonefall (Starbeck) | ECM7 | 24m 64ch | April 1952 | 1980 | Chevington (CN) |
| WS | Widnes West Deviation Junction | SDJ2 | 17m 50ch | Ditton Junction No 1 (DN1) | |||
| WW | Wigan Wallgate | WBS3 | 18m 9ch | 1941 | |||
| WN | Wigton | CBC3 | 16m 5ch | 1957 | |||
| WR | Wilford Road | TSN2 | c123m 60ch | Trent (TT) | |||
| - | Willesborough Crossing | Gate box. Last level crossing between London and Paris | XTD | 56m 74ch | 2001 | Ashford (AD) | |
| CM | Willesden Carriage Shed Middle | WCL | 2m 25ch | 1953 | |||
| CN | Willesden Carriage Shed North | WCL | 2m 50ch | 1953 | |||
| CS | Willesden Carriage Shed South | WCL | 2m 0ch | 1953 | |||
| HL | Willesden High Level Junction | BOK3 | 5m 48ch | 1930 | |||
| WN | Willesden New | CWJ | 5m 28ch | 1988 | Willesden Suburban (WS) | ||
| WN | Willesden PSB | BOK3 | 5m 65ch | 12 July 1965 | 24 December 2000 | Wembley (WM) | |
| X | Draw ahead signals | ||||||
| WS | Willesden Suburban | CWJ | 5m 26ch | 1988 | 18 July 2005 | Wembley Main Line (WS) | |
| WW | Wilmslow | CMP1 | 176m 65ch | 29 June 1959 | 11 March 2006 | Manchester South (MS) | |
| W | Wilstrop | Gate Box: line controlled by Hammerton (H). Believed prefix not carried | HAY1 | 7m 45ch | |||
| WN | Wilton | Code from 1973, name changed from Wilton South at same time. Box now on Mid Hants Railway | BAE2 | 86m 10ch | by 1896 | 29 November 1981 | Salisbury (SY) |
| WS | Code to 1973 | ||||||
| W | Wimbledon | BML1 | 7m 49ch | 16 April 1990 | |||
| WH | Wimbledon 'A' | BML1 | 7m 14ch | 22 February 1948 | 14 April 1990 or 24 September 1990 |
Wimbledon (W) | |
| WJ | Wimbledon 'B' | BML1 | 7m 42ch | 27 February 1928 | 23 May 1982 | Wimbledon 'A' (WH) | |
| WK | Wimbledon 'C' | BML1 | 7m 66ch | 28 April 1929 | 1 August 1982 | Wimbledon 'A' (WH) | |
| WBF | Wimbledon Park | PPW | c7m 49ch | by 1900 | 24 September 1990 | Wimbledon (W) | |
| TY | Wimbledon Park Top Yard Shunters | BML1 | 6m 45ch | 1976 | |||
| EE | Stop board near wheel lathe | ||||||
| W | Winchburgh Junction | EGM1 | c34m 54ch | 1890 | 12 February 1979 | Edinburgh (EW) | |
| VW | Winchfield | BML1 | 39m 65ch | 25 September 1904 | 30 October 1966 | Basingstoke (YW) | |
| W | Wincobank Station Junction | TJC2 | 161m 52ch | 14 January 1979 | Sheffield (S) | ||
| WB | Windsor Bridge | MVE1 | c1m 64ch | Manchester Piccadilly (MP) | |||
| W | Winning | Earlier code | WSB | 0m 36ch | 1895 | ||
| WG | Later code | ||||||
| WD | Winsford | CGJ1 | 166m 70ch | 1897 | |||
| WS | Winsford Station | CGJ1 | 165m 7ch | Winsford (WD)? | |||
| Winterbourne | SWB | 109m 73ch | 1 May 1903 | 6 June 1970 | Stoke Gifford East (SE) | ||
| WH | Wisbech Junction | ECM1 | 20 March 1971 | Spital Junction (SJ) | |||
| W | Wishaw Central | WWD | 1 April 1897 | 21 October 1973 | Motherwell (M) | ||
| W | Witham | LTN1 | 38m 53ch | 19 November 1961 | 18 October 1997 | Liverpool St (L) | |
| D | Down line automatic signals | ||||||
| RW | Banner repeater signals | ||||||
| U | Up line automatic signals | ||||||
| WT | Witham | WEY | 120m 76ch | 24 November 1984 | Westbury (W) | ||
| Witton le Wear | DAE3 | 1m 14ch | |||||
| WS | Woburn Sands | Thought that code not carried on signals | BBM | 4m 12ch | 1904 | 6 September 2004 | Marston Vale (MV) |
| WV | Woking | BML1 | 24m 32ch | 27 June 1937 | 22 August 1997 | Woking (WK) | |
| WK | Woking ASC | BML1 | 24m 20ch | 22 August 1997? | |||
| WFF | Wokingham | Code to 1973 | RDG2 | 62m 2ch | 23 April 1933 | ||
| WM | Code from 1973 | ||||||
| - | Woldingham | SCU1 | 17m 12ch | November 1985 | Oxted (OD) | ||
| WJ | Wolvercot Junction | DCL | 66m 31ch | 1900 | 14 October 1973 | Oxford (OX) | |
| DM | Down main line automatic signals | ||||||
| UM | Up main line automatic signals | ||||||
| WN | Wolverhampton | RBS2 | 12m 69ch | 16 August 1965 | |||
| WN2 | Wolverton No 2 | LEC1 | c52m 25ch | Bletchley (BY) | |||
| BY | Temporary code until area taken over by Bletchley | ||||||
| WN | Wolverton North | LEC1 | Bletchley (BY) | ||||
| WS | Wolverton South | LEC1 | Bletchley (BY) | ||||
| WL | Wombwell | PED3 | 9m 76ch? | ||||
| WM | Wombwell Main Junction | PED3 | 8m 32ch? | 1981 | |||
| WH | Woodborough | BHL | 78m 71ch | 20 January 1979 | Reading (R) | ||
| WJ | Woodburn Junction | MAC3 | 42m 35ch? | 1992? | Woodburn Junction (W) | ||
| W | Woodburn Junction | MAC3 | 42m 29ch | 1992 | |||
| Woodgate Crossing | TBH2 | 22m 53ch | by 1900 | Barnham (BH) | |||
| WP | Woodgrange Park | TAH4 | 12m 7ch | 1894 | after 1997 | Liverpool St (L) | |
| WG | Wood Green | ECM1 | c4m 77ch | Finsbury Park (FP)? | |||
| WG1 | Wood Green No 1 | ECM1 | 14 September 1974 | Wood Green (WG) | |||
| WG2 | Wood Green No 2 | ECM1 | 7 September 1974 | Wood Green (WG) | |||
| R | Banner repeater signals | ||||||
| W4 | Wood Green No 4 | ECM1 | 7 September 1974 | Wood Green (WG) | |||
| WH | Woodhouse Junction | MAC3 | 46m 52ch | 1926 | |||
| WJ | Woodley Junction | RYH1 | c179m 44ch | Romiley Junction (RJ) | |||
| WS | Woodside | EEA | 1877 | 24 June 1984 | Addiscombe (AC) | ||
| W | Woofferton Junction | SHL | 32m 2ch | 1875 | |||
| WJ | |||||||
| WO | Wool | BML2 | 125m 72ch | 1890 | |||
| W | Woolley Coal Siding | BAH2 | 48m 42ch | 1996 | |||
| G | Woolmer Green | ECM1 | c23m 50ch | 5 October 1973 | Welwyn Garden City (WC) | ||
| BW | Wootton Bassett West | MLN1 | 83m 22ch | 17 November 1901 | 23 March 1968 | Swindon (SN) | |
| DM | Down main line automatic signals | ||||||
| UM | Up main line automatic signals | ||||||
| SH | Worcester Shrub Hill | OWW | 120m 31ch | 1935 | |||
| TJ | Worcester Tunnel Junction | OWW | 120m 72ch | 1905 | |||
| WN2 | Workington Main No 2 | CBC2 | 6m 53ch | 1889 | |||
| WN3 | Workington Main No 3 | Code presumed | CBC2 | 6m 74ch | 1886 | ||
| WP | Worksop | MAC3 | 56m 57ch | 1998 | |||
| W | |||||||
| WE | Worksop East | MAC3 | 56m 65ch | 1880 | 10 October 1999 | Worksop (WP) | |
| WW | Worksop West | MAC3 | 56m 42ch | 1874 | 1998 | Worksop (WP) | |
| Worle Junction | MLN1 | 135m 17ch | ?? | 29 January 1972 | Bristol (B) | ||
| WSM | 135m 17ch | ||||||
| WY | Wormley | BGK | 16m 5ch | Broxbourne (BN) | |||
| D | Down line automatic signals | ||||||
| U | Up line automatic signals | ||||||
| WW | Worplesdon | WPH1 | 26m 66ch | by 1900 | 17 April 1966 | Woking (WV) | |
| WO | Worsborough Bridge Crossing | PED2 | 6m 25ch? | 1981 | |||
| WD | Worsborough Dale Crossing | PED2 | 6m 72ch? | 1981 | |||
| WR | Worthing | Formerly Worthing 'B' | BLI1 | 10m 59ch | by 1910 | 1988 | Lancing (LG) |
| ZW | Worting Junction | BML1 | 50m 22ch | 30 May 1897 | 20 November 1966 | Basingstoke (YW) | |
| WN | Wortley North [Leeds] | Code not certain | LBE1 | 30 April 1967 | Leeds (L) | ||
| W | Wortley West [Leeds] | LBE1 | Leeds (L) | ||||
| W | Wortley Station | MAC2 | 32m 51ch? | ||||
| WJ | Wrawby Junction | NOB3 | 12m 55ch | 1916 | |||
| WY | Wrenbury | SYC | 8m 52ch | 1882 | |||
| EBT | Wye | ACR | 60m 35ch | 1893 | 15 December? 2003 | Canterbury Wye Area Control Centre (EBT) | |
| WE | Wye | Gate box, line controlled by Canterbury Wye Area Control Centre (EBT). Panel in booking office, prefix not carried on signals | ACR | ||||
| WV | Wye Valley Junction Ground Frame | SWM2 | 140m 52ch | ||||
| WM | Wylam | Code on all signals by 2008 | NEC2 | 8m 35ch | 1897 | ||
| W | Code used from 1969 | ||||||
| WY | Wylye | SAL | 124m 41ch | 4 March 1877 | 1981 | Salisbury (SY) | |
| W | Wymondham South Junction | ETN | 113m 69ch | 1877 | |||
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