Last update 4 January 2021
Additional information is always gratefully received, whether entirely new records (particularly historical records), or information to fill in gaps or correct errors, via the contact link under the Miscellaneous entry in the navigation bar above. Thank you.
Please select a starting letter from the links below:
| Code | Signal Box | Note | ELR | Mileage | Opened | Closed | Control to |
|---|
| N | Naburn | Code probably used from 1951 | TCW2 | ≈184m 20ch | 2 April 1967 | York [PSB] (Y) | |
| R | Distant signals | ||||||
| U | Up line automatic signals | ||||||
| Nafferton | HBS | 21m 43ch | ? | 26 November 1989 | Driffield (D) | ||
| Nailsea & Backwell | Named Nailsea East to 1905 | MLN1 | 126m 37ch | 1876 | 4 December 1971 | Bristol (B) | |
| Nailsea East | See Nailsea & Backwell | ||||||
| NA | Nairn | ANI3 | 128m 72ch | 10 April 2000 | 7 October 2017 | Inverness (HN) | |
| Nairn East | ANI3 | 128m 63ch | 1891 | 10 April 2000 | Nairn (NA) | ||
| Nairn West | ANI3 | 129m 4ch | 1891 | 10 April 2000 | Nairn (NA) | ||
| NH | Nantwich | SYC | 4m 19ch | 1948 or 1954 | 12 October 2013 | South Wales Control Centre (SC) | |
| NR | Narborough | WNS | 11m 65ch | 1875 | 28 July 2006 | Croft (CT) | |
| NH | |||||||
| NN | Navigation Road | CDM1 | 7m 6ch | 1882 | 7 July 1991 full replacement signalling into use 22 July 1991 |
Deansgate Junction (DJ) | |
| NJ | Neasden Junction | Closed, reopened 1 September 1991 | CAW | 7m 3ch | 1899 | ||
| NS | Neasden South Junction | MCJ1 | 200m 63ch | 1906 | 22 September 1990 | Marylebone [new] (ME) | |
| D | Distant signals | ||||||
| NB | Neath & Brecon Junction | VON | 41m 21ch | 1892 | Wales Rail Operating Centre (PT) (planned) | ||
| N&B | Code reported in 1982 notice, probably in error | ||||||
| NE | Neath General East | Downgraded to ground frame 1 October 1973 | SWM2 | 207m 60ch | 5 July 1926 | 5 May 1977 | Port Talbot (PT) |
| N | Neepsend | MAC3 | 40m 11ch | 1888? | June 1978 burnt down |
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| NH | Neilston | Named Neilston High 2 June 1924 to 6 May 1974. Code used from 1961 | NNH | 108m 45ch | 1 April 1903 | 31 October 1982 | Cathcart (C) |
| Neilston High | See Neilston | ||||||
| NJ | Netherfield Junction | NOG1 | 125m 17ch | 30 October 1960 | 29 July 2013 | East Midlands Control Centre (GN/NN) | |
| Neville Hill Depot | Merger of east and west consoles 4 February 2001 | HUL4 | 18m 40ch | 1968 or 27 January 1969? |
|||
| NHE | Neville Hill East | Closure date uncertain | HUL4 | 18m 28ch | 6 October 1968 | Leeds (L) | |
| NHW | Neville Hill West | Closure date uncertain | HUL4 | 18m 74ch | 6 October 1968 | Leeds (L) | |
| N | Code also reported: possibly later code | ||||||
| N | Newark | Named Newark South to 11 July 1977. Code used from renaming | ECM1 | 120m 2ch | 12 April 1931 | 3 February 1980 | Doncaster (D) |
| NS | Code when named Newark South | ||||||
| NC | Newark Castle | NOB1 | 16m 79ch | 15 September 1912 | 5 November 2016 | East Midlands Control Centre (NN) | |
| X | Newark Crossing | Earlier code | ECM1 NOB1 |
120m 57ch 17m 68ch |
5 February 1870 | 17 May 1981 | Doncaster (D) |
| NC | Later code | ||||||
| D | Down direction automatic signals | ||||||
| RD | Distant to down direction automatic signals | ||||||
| RU | Distant to up direction automatic signals | ||||||
| U | Up direction automatic signals | ||||||
| NN | Newark North | ECM1 | 120m 26ch | 14 August 1875 | 27 February 1977 | Newark (N) | |
| Newark South | See Newark | ||||||
| NB | New Barnet | Named New Barnet North to 31 May 1970. Code used from renaming | ECM1 | 9m 19ch | 4 April 1895 | 4 September 1976 | Kings Cross (K) |
| BN | Code used to 30 May 1970 | ||||||
| DF | Down fast line automatic signals | ||||||
| DS | Down slow line automatic signals | ||||||
| UF | Up fast line automatic signals | ||||||
| US | Up slow line automatic signals | ||||||
| New Barnet North | See New Barnet | ||||||
| BS | New Barnet South | ECM1 | 9m 1ch | 1906 | 30 May 1970 | New Barnet (NB)? | |
| EBO | New Beckenham | LCH | 10 September 1904 | 27 September 1975 | London Bridge (L) | ||
| New Brighton | BEN | 7m 6ch | 1888 | 18 September 1994 | Merseyrail (ML) | ||
| NM | Newbury Middle | Unclear if code carried | BHL | 52m 78ch | 1910 | 4 March 1978 | Reading (R) |
| N | Newcastle | ECM6 ECM7 |
80m 16ch 0m 0ch |
12 April 1959 | 1991 (by 21 April) | Tyneside (T) | |
| B | Manors-South Gosforth route signals. Code probably used from February 1964 until taken over by Metro | ||||||
| DN | Down north line automatic signals. Code used from February 1964 | ||||||
| DT | Down Tynemouth line automatic signals. Code believed used from February 1964 | ||||||
| R | Banner repeater signals. Code used from February 1964 | ||||||
| U | Up line automatic signals. Code used on line NEN from 6 February 1966 | ||||||
| UN | Up north line automatic signals. Code used from February 1964 | ||||||
| UT | Up Tynemouth line automatic signals. Code used from February 1964 | ||||||
| N1 | Newcastle No 1 | Code used from March 1956 | 12 April 1959 | Newcastle (N) | |||
| K | New Cross | Named New Cross A to 30 June 1929 | XTD | ≈4m 60ch | 13 December 1903 | 1 December 1929 | North Kent East Junction (K) |
| New Cross A | See New Cross | ||||||
| MC | New Cross Gate | LBW | 2m 59ch | 8 October 1950 | 20 July 1975 | London Bridge (L) | |
| CA | Automatic signals | ||||||
| NC | New Cumnock | New Cumnock interlocking. Code used from 2002 | GSW | 54m 66ch | 1909 | ||
| NG | Greenburn Junction interlocking. Code used from 25 April 2004 | ||||||
| A | New England Shunting Cabin A | Code not confirmed. Gradual cutting back of control from 16 April 1989 | PHS | ? | 1902 | 23 September 1989 delayed from 16 April 1989 |
To hand controlled points |
| New Fishbourne Crossing | TBH2 | 30m 8ch | ? | Chichester (CC) | |||
| NH | Newhaven Harbour | STS | 56m 58ch | 1886 | 1 December 2019 delayed from 15 April 2015 and again from 11 March 2019 |
Three Bridges Rail Operating Centre (TLW) | |
| CCO | Newhaven Town | STS | 56m 20ch | 1879 | 1 December 2019 delayed from 15 April 2015 and again from 11 March 2019 |
Three Bridges Rail Operating Centre (TLW) | |
| NH | New Hythe | Original code | PWS2 | 37m 79ch | 14 May 1939 | 5 November 2005 | Aylesford (AF) |
| NW | Later code | ||||||
| N | Newington [Hull] | Hessle Road Junction (HR) | |||||
| Newland | See Newland East | ||||||
| NE | Newland East Level Crossing | Named Stocks Lane to 1929, then Newland to 1943 | WAH | 126m 23ch | April 1900 | ||
| N | Newlands | OVE | 3m 50ch | December 1921 | 12 April 1975 | Port Talbot (PT) | |
| WM | New Malden | BML1 | 9m 72ch | 1880 | 8 July 1990 | Wimbledon (W) | |
| Newmill | See Carmont | ||||||
| NM | New Mills Central | TTA1 | 173m 11ch | 1924 | |||
| NS | New Mills South Junction | NMC1 | 172m 17ch | 1903 | |||
| NMS | At least two signals | ||||||
| N | Newport | SWM2 | 158m 36ch | 9 December 1962 | 4 January 2010 in part; 29 October 2012 remainder |
South Wales Control Centre (NT) | |
| A | Magor East/Undy area shunt signals | ||||||
| B | Ebbw Junction area signals | ||||||
| DH | Down Hereford line automatic signals | ||||||
| DM | Down main line automatic signals | ||||||
| DR | Down relief line automatic signals | ||||||
| DT | Unknown precisely to what signals this code refers | ||||||
| E | Newport East area shunt signals | ||||||
| G | Gaer Junction area shunt signals | ||||||
| J | Severn Tunnel Junction area shunt signals | ||||||
| L | Maindee North Junction area shunt signals | ||||||
| NO | Code reported in November 1975 notice, probably in error | ||||||
| RS | Banner repeater to Llanwern Tippler Siding shunt signals | ||||||
| S | Llanwern Tippler Siding shunt signals | ||||||
| U | East Usk area shunt signals | ||||||
| UH | Up Hereford line automatic signals | ||||||
| UM | Up main line automatic signals | ||||||
| UR | Up relief line automatic signals | ||||||
| W | Newport West area signals | ||||||
| D | Newport | Down direction automatic signals. Demolished in shunting accident | BGK | 39m 71ch | 1884 | October 1972 | Newport [new] (D) |
| D | Newport [new] | Down direction automatic signals | BGK | 39m 71ch | 11 November 1972 | 11 December 1983 | Cambridge (CA) |
| E | Newport East | SWM2 | 158m 32ch | 29 May 1927 | 9 December 1962 | Newport (N) | |
| N | Newport East | DSN2 | 13m 69ch | 11 August 1962 | Tees (TY) | ||
| D | Down direction automatic signals | ||||||
| U | Up direction automatic signals | ||||||
| W | Newport West | SWM2 | 158m 61ch | 24 June 1928 | 9 December 1962 | Newport (N) | |
| N | Newsham South | EJM | 12m 44ch | ? | |||
| N | Newton | Code used from 1960 | WCM2 | 95m 53ch | 5 September 1960 | 28 August 1973 | Motherwell (M) |
| NAE | Newton Abbot East | Unclear whether code carried | MLN1 | 213m 79ch | 25 April 1926 | 4 May 1987 | Exeter (E) |
| Newton Abbot West | MLN1 | 214m 32ch | 3 April 1927 | 4 May 1987 | Exeter (E) | ||
| NH | Newton Hall | ECM5 | 68m 0ch | December 1964 | Durham North (DN) | ||
| D | Down line automatic signals | ||||||
| U | Up line automatic signals | ||||||
| NH | Newtonhill | Code used from 2002 | ECN5 | 230m 59ch | 1876 | 27 April 2019 last train 29 April 2019 official delayed from 18 March 2019 |
Aberdeen (A) |
| N | Newton Junction | HAJ | 7m 22ch | December 1984 | Guide Bridge (GB) | ||
| NR | Banner repeater signals | ||||||
| NN | Niddrie North | Named Brunstand Park Junction to 28 November 1926 | NDE1 | 4m 16ch | 9 August 1915 | 6 May 1973 | Portobello (P) |
| NW | Niddrie West | SUB2 | 6m 34ch | 17 June 1900 | 27 June 1976 | Portobello (EP) | |
| N | Noblethorpe | Gate box: line controlled by Doncaster (D) | ECM2 | 161m 34ch | ? | ||
| NY | Norbury Hollow Crossing | Some signals have HG (Hazel Grove), most not plated | BEJ | 3m 60ch | January 1974 | ||
| D | Normanby Park | Scunthorpe (S)? | |||||
| NN | Normanton Station North | TJC3 | "Normanton" 'box closed 19 December 1973: unclear whether Station North or Station South (or neither) | Castleford (CD) | |||
| NS | Normanton Station South | TJC3 | Castleford (CD) | ||||
| NA | North Acton | ANL | 4m 15ch | 25 August 1940 | 2 December 1966 | Old Oak Common (OO) | |
| N | Northallerton | Codes used from opening. Slow lines have suffix S | ECM5 | 30m 9ch | 3 September 1939 built 1937 |
14 April 1990 | York [IECC] (Y) |
| D | Down line automatic signals. Code used until 1974 | ||||||
| DF | Down fast line automatic signals. Code used from 1974 | ||||||
| DS | Down slow line automatic signals. Code used from 1974 | ||||||
| U | Up line automatic signals | ||||||
| UB | Up branch line distant signals | ||||||
| UF | Up fast line automatic signals | ||||||
| US | Up slow line automatic signals | ||||||
| E | Northallerton East | LEN2 LEN3 LLP2 |
0m 36ch 42m 79ch 42m 79ch |
6 March 1960 | Low Gates (LG) | ||
| WDQ | Northam Junction | BML2 | 78m 15ch | 8 July 1923 | 11 October 1981 | Eastleigh [new] (E) | |
| NT | Northam Junction Traincare Depot | Stop boards | BML1 | 10 May 2004 | |||
| BS | Northampton Bridge Street | Downgraded to ground frame 10 August 1969. Out of use for some time before official closure, reported as 15 April 2006, but BS signals replaced by RY stop boards in 2012 resignalling | BPH | 4m 57ch | March 1907 | 5 June 2012 | Rugby Signalling Control Centre (RY) |
| DS | Northampton Down Sidings | HNR | ≈66m 52ch | Northampton No 4 (NH4) | |||
| NH1 | Northampton No 1 | HNR NMH |
65m 53ch 0m 56ch |
July 1881 | 28 July 1991 | Rugby (RY) | |
| NH2 | Northampton No 2 | HNR | 66m 5ch or 65m 79ch? |
January 1882 | 3 December 1982 | Northampton No 3 [new] (NH3) | |
| NH3 | Northampton No 3 | HNR | 66m 18ch | 1 November 1981 | Northampton No 3 [new] (NH3) | ||
| NH3 | Northampton No 3 [new] | HNR | 66m 18ch | 1 November 1981 | 28 July 1991 | Rugby (RY) | |
| NH4 | Northampton No 4 | HNR | 66m 59ch | c June 1885 | 28 July 1991 | Rugby (RY) | |
| WH4 | Shown in 1981 weekly notice in error | ||||||
| BH4 | |||||||
| DW | North Camp | GTW2 | 51m 12ch | by 1902 | 7 May 1980 | Ash Crossing (FW) | |
| NN | Northenden Junction | EJN WJP1 |
3m 72ch 33m 49ch |
1881 | |||
| NJ | |||||||
| NF | Northfleet | HDR | 21m 68ch | 1891? | 14 March 1971 | Dartford (D) | |
| Northfleet APCM Control Room | See Northfleet Blue Circle | ||||||
| N | Northfleet Blue Circle | Opened as Northfleet APCM Control Room | NFT | 14 December 1970 | 19 March 1993 last train | ||
| A | Line A draw ahead signals | ||||||
| B | Line B draw ahead signals | ||||||
| C | Line C draw ahead signals | ||||||
| K | North Kent East Junction | XTD | 4m 34ch | 1 December 1929 | 15 April 1976 | London Bridge (L) | |
| A | Automatic signals | ||||||
| Northolt Junction East | ANL NAJ1 |
10m 6ch 0m 9ch |
1905 | 29 May 1990 | Marylebone [new] (ME) | ||
| N | North Ormesby | MBW1 | 0m 38ch | 23 December 1990 believed delayed from 28 October 1990 |
Middlesbrough (M) | ||
| NY | Code used from 26 January 1986 when downgraded to gate box | ||||||
| N | Northorpe | MAC3 | 82m 14ch | 1886 | |||
| NP | North Pole | WLL | 5m 32ch | 1922 | 4 October 1992 | Old Oak Common [new panel] (OO) | |
| NP | North Pole IEP Depot | WLL9 | 2014 | ||||
| ND | North Pole International Depot | WLL9 | ≈5m 50ch | 14 February 1994 | Depot closed | ||
| NRE | North Road East | MLN1 | 245m 66ch | 25 June 1939 | 26 November 1960 | Plymouth (P) | |
| NS | North Seaton | Downgraded to gate box 2 January 1971: line controlled by Marcheys House. Code not confirmed | BWC | 1m 75ch | ≈1872 | ||
| WBR | North Sheen Crossing | Downgraded to gate box 10 November 1974 | RDG1 | 9m 12ch | 1 January 1895 | 31 October 1976 | Barnes (WBO) |
| NS | North Shore [Stockton-On-Tees] | Code used from 1973 | LEN3 | 60m 47ch | 7 December 1986 | Bowesfield (B) | |
| R | Banner repeater signals | ||||||
| Z | North Sidings [Worcester] | Code most likely to be merely a note on a signalling plan | OWW | 120m 17ch | ? | ||
| North Somerset Junction | MLN1 | 117m 46ch | 22 March 1886 | 18 July 1970 delayed from 10 May 1970 |
Bristol (B) | ||
| NP | Northumberland Park | Downgraded to gate box 10 March 1969 | BGK | 6m 77ch | 1 April 1913 | 24 April 1988 | Brimsdown (BD) |
| NW | North Walsham | WHC1 | 15m 76ch | 1896 | 26 June 2000 | Trowse Swing Bridge [new] (TB) | |
| NW | North Wembley | CWJ | 8m 60ch | 10 December 1988 | Willesden Suburban (WS) | ||
| NN | Norton | CHW1 | 13m 17ch | 3 September 1972 | Frodsham Junction (FJ) (planned) | ||
| NB | Norton Bridge | LEC4 | 138m 72ch | 8 October 1961 | 24 June 2004 last train; 26 June 2004 official delayed from 4 May 2004 |
Stoke on Trent Signalling Centre (NS/SC) | |
| NC | Norton Crossing | Downgraded to gate box 2 September 1972: line controlled by Warrington (WN) | CGJ2 | ≈177m 40ch | Warrington (WN) | ||
| N | Norton (Doncaster) | Gate box: line controlled by Doncaster (D) | KWS | 65m 11ch | 26 October 1980 | ||
| NJ | Norton Junction | Planned closure 10 February 1990 was cancelled | OWW | 117m 26ch | May 1908 | ||
| N | Earlier code | ||||||
| NE | Norton on Tees East | Code reported but not seen on site | LEN3 | 62m 20ch | 1870 | 10 February 2021 (planned) | York Rail Operating Centre (NS) |
| E | Code shown on signalling plan | ||||||
| NS | Norton on Tees South | LEN3 | 61m 70ch | 1870 | 10 February 2021 (planned) | York Rail Operating Centre (NF/NS) | |
| S | Code shown on signalling plan | ||||||
| N | Norton on Tees Station | LEN3 | 62m 64ch | 1897 | 10 February 2021 (planned) | York Rail Operating Centre (NS) | |
| NT | Code shown on signalling plan | ||||||
| NW | Norton on Tees West | STF | 0m 31ch | ≈1921 | 10 February 2021 (planned) | York Rail Operating Centre (NF) | |
| W | Code shown on signalling plan | ||||||
| NO | Norwich [temporary] | LTN2 | ≈123m 68ch | 2 February 1986 | 8 June 1986 | Norwich Station (NO) | |
| CP | Norwich Crown Point Depot Control Cabin | NCW | 0m 25ch | 3 October 1982 | |||
| NO | Norwich Station | LTN2 | 123m 66ch | 8 June 1986 | 15 March 1987 | Colchester [new] (CO) | |
| NJ | Norwich Thorpe Junction | LTN2 | 123m 62ch | July 1886 inspected 27 April 1886 |
13 July 1986 | Norwich Station (NO) | |
| NP | Norwich Thorpe Passenger Yard | Code used by 5 October 1985 | LTN2 | ≈123m 68ch | 1886 | 1 February 1986 | Norwich Station (NO) |
| PY | Code uncertain | ||||||
| NX | Norwood Crossing Ground Frame | NX signals still thought to be present 2016 | PSE | 147m 71ch | ? | ? | Shirebrook Junction (SJ) |
| JC | Norwood Junction | LBW | 8m 66ch | 21 March 1954 | 28 April 1984 | Three Bridges [new] (T) | |
| CA | Automatic signals | ||||||
| N | Norwood Junction | Demolished 26 May 1974 | NEC1 | ≈1m 75ch | Tyne Yard (TY) | ||
| ND | Unclear if code used | ||||||
| JC | Norwood Junction North | LBW | 8m 35ch | 27 January 1904 | 21 March 1954 | Norwood Junction (JC) | |
| CA | Automatic signals | ||||||
| N | Nostell | DOL1 | 170m 35ch | 12 May 1929 | 28 November 1970 | South Kirkby Junction (SK) | |
| GY | Nottingham Goods Yard | NOB1 | 127m 56ch | 23 September 1899 | 6 April 1986 | Trent (TT) | |
| GE | Nottingham Goods Yard East Shunt Frame | TSN2 | Trent (TT) | ||||
| GN | Nottingham Goods Yard North Shunt Frame | MJT1 | Trent (TT) | ||||
| GW | Nottingham Goods Yard West Shunt Frame | TSN2 | Trent (TT) | ||||
| NW | Nottingham Station West | TSN2 | ≈123m 52ch | Trent (TT) | |||
| NN | Nuneaton | Code used from opening | LEC2 WNS |
96m 65ch 0m 8ch |
6 October 1963 | 8 September 2008 | Rugby Signalling Control Centre (CN/NL/NW/RN) |
| R | Banner repeaters | ||||||
| NDS | Nuneaton Down Sidings | Downgraded to shunt frame 6 October 1963 | LEC2 | ≈97m 20ch | 12 March 1978 | Nuneaton (NN) | |
| MJ | Nuneaton Midland Junction | NMA WNS |
11m 31ch 0m 58ch |
1867? | 1 March 1992 | Nuneaton (NN) | |
| NUS | Nuneaton Up Sidings | Downgraded to shunt frame 6 October 1963 | LEC2 | ≈97m 10ch | August 1976 | Nuneaton (NN) | |
| R | Nunhead | CAT NTL |
6m 10ch 6m 10ch |
11 October 1925 | 17 January 1982 | Victoria Signalling Centre (VS) | |
| A | Automatic signals | ||||||
| NM | Nunnery Main Line Junction | NUJ1 TJC1 |
≈158m 77ch ≈158m 77ch |
20 January 1973 | Sheffield (S) | ||
| RNM | Banner repeater signals | ||||||
| U | Up direction automatic signals | ||||||
| N | Nunthorpe | Code not carried | MBW1 | 4m 30ch | 1903 | ||
| B | Battersby point indicators (code is carried) | ||||||