Last update 1 December 2020
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 |
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| KC | Keadby Canal | Downgraded to gate box 29 October 1972: line controlled by Scunthorpe (S) | DOW | 18m 14ch | 1926 | ||
| K | Unclear if code carried or even allocated | ||||||
| KJ | Kearsley Junction | MVE1 | ≈7 September 1986 | Bolton (BN) | |||
| K | Keighley Station Junction | TJC3 | 212m 18ch | 1884 | 22 October 1994 | Leeds (L) | |
| U | Up line automatic signals | ||||||
| KJ | Keith Junction | Code used from 2002 | ANI2 | 30m 34ch | 9 October 1905 | ||
| B | Kellingley Colliery | Bunker line shunt signals Also had draw-ahead signals in colliery sidings lettered A to H, with no number |
WAG1 | ||||
| K | Kelvinhaugh Junction | Code used from 1935 | ARG2 | 2m 21ch | 29 December 1935 | 20 May 1979 | Hyndland (H) |
| KR | Kempston Road Junction | SPC1 | 49m 16ch | 1 November 1980 | West Hampstead (WH) | ||
| Kemsing | SBJ | 26m 79ch | 30 September 1964 | Otford Junction (EBV)/ Borough Green (BG) |
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| K | Kendall Green | PED2 | 5m 57ch | 1924 | 17 July 1981 | Barnsley (BY) | |
| K | Kennethmont | Code used from 2002 | ANI1 | 32m 71ch | 30 July 1888 | ||
| KN | Code used from 4 January 2003 | ||||||
| K | Kennett | Now preserved on Colne Valley Railway | CCH | 18m 69ch | 1880 | 25 March 2012 (official) removed 18 December 2011 |
Bury St Edmunds (BY) |
| K | Kennington Junction | DCL | 61m 3ch | 1901 | 15 December 1973 | Oxford (OX) | |
| KJ | |||||||
| DX | Down Oxford line automatic signals | ||||||
| UX | Up Oxford line automatic signals | ||||||
| KG | Kensal Green | CWJ | 4m 34ch | 10 December 1988 | Willesden Suburban (WS) | ||
| KG | Kensal Green Junction | KGC | ≈0m 10ch | 7 April 1985 | Willesden High Level Junction (HL) | ||
| KN | Kensington | Formerly named Kensington North Main | WLL | 3m 58ch | February 1892 | 22 January 1983 | Victoria Signalling Centre (VC) |
| Kensington North Main | See Kensington | ||||||
| KS | Kensington South Main | WLL | 3m 34ch | 1892 | 4 October 1992 | Victoria Signalling Centre (VC) | |
| Kentish Town Junction | See Camden Road Junction | ||||||
| KT | Kenton | CWJ | 10m 15ch | 10 December 1988 | Willesden Suburban (WS) | ||
| RKT | Repeater signals | ||||||
| K | Ketton | PMJ | 6m 59ch | 14 January 1900 | |||
| KE | Kew East Junction | BOK5 | 3m 32ch | 1900 | 4 June 2012 | Acton Wells Junction (AW) | |
| K | Keyham | Formerly named Keyham Station | MLN2 | 249m 30ch | 25 June 1900 | 30 June 1973 | Plymouth (P) |
| Keyham Station | See Keyham | ||||||
| CG | Keymer Crossing | VTB3 | 40m 79ch | 1884 | 25 June 1983 | Three Bridges [new] (T) | |
| KE | Keynsham & Somerdale East | MLN1 | 113m 19ch | 15 July 1966 | 18 July 1970 | Bristol (B) | |
| DM | Down main line automatic signals | ||||||
| KW | Keynsham & Somerdale West | MLN1 | 113m 53ch | 24 July 1933 | 18 July 1970 | Bristol (B) | |
| KJ | Kidderminster Junction | Demolished September 2015 | OWW | 135m 17ch | 25 October 1953 | 28 August 2012 | West Midlands Signalling Centre (DR) |
| KC | Kidsgrove Central | CMD1 | 13m 66ch | 24 July 1965 | 17 May 2002 last train; 27 May 2002 official |
Stoke on Trent Signalling Centre (SOT) | |
| KCR | Repeater signals | ||||||
| K | Kidwelly | SWM2 | 234m 24ch | 1885 | Wales Rail Operating Centre (PT) (planned) | ||
| KB | Kilburn | CWJ | 2m 67ch | 10 December 1988 | Willesden Suburban (WS) | ||
| K | Kildwick | TJC3 | 216m 52ch | 1895 | 22 October 1994 | Leeds (L) | |
| D | Down line automatic signals | ||||||
| U | Up line automatic signals | ||||||
| KK | Kilkerran | Code used from 2002 | STR1 | 53m 75ch | 29 April 1895 | ||
| K | Killingworth | Code used from June 1962. Downgraded to gate box 15 January 1978 | ECM7 | 5m 76ch | 17 April 1991 | Benton (B) | |
| D | Down line automatic signals | ||||||
| U | Up line automatic signals | ||||||
| K | Kilmarnock | Code used from 1976, burnt down 25 December 2006, reopened 2 January 2007 | BAK GBK |
0m 3ch 23m 42ch |
12 April 1976 | ||
| Kilnhurst | See Kilnhurst South | ||||||
| Kilnhurst Central | WME | 8m 50ch | 6 July 1980 | Thrybergh Junction (T) | |||
| K | Kilnhurst South | Also called Kilnhurst West South or Kilnhurst. Code used from 1965 | TJC3 | 165m 58ch | 23 November 1980 | Sheffield (S) | |
| Kilnhurst West South | See Kilnhurst South | ||||||
| PK | Kilwinning Local Signalling Panel | See Paisley Kilwinning interlocking | AYR4 | 25m 65ch | 1887 | 5 April 1986 | Paisley [new] (PK) (local control still possible) |
| KS | Kimberley Sidings Ground Frame | MLN1 | 10 September 1966 | Old Oak Common (OO) | |||
| KR | Kingmoor | WCM1 | 1m 76ch | 18 February 1963 | 16 June 1973 | Carlisle (CE) | |
| KY | Kingsbury Shunt Frame | DBP1 | 28m 26ch | 1969 | |||
| KC | Kings Cross | Existence of code not confirmed | ECM1 | ≈0m 15ch | 26 September 1971 (in part), 1976 (final) | Kings Cross (K) | |
| K | Kings Cross | ECM1 | 0m 20ch | 26 September 1971 | 3 December 2018 in part | York Rail Operating Centre (K/WL) | |
| KC | Code used by 1975 | ||||||
| KX | |||||||
| OJ | A few signals on 'Widened Lines', see also London Underground codes | ||||||
| OJX | |||||||
| WL | Hertford North to Langley Junction section. Code used from 4 May 2013 with ERTMS test track. Control from Hitchin when testing taking place | ||||||
| Kings Cross Freight Terminal Ground Frame | See Freight Terminal Ground Frame [Kings Cross] | ||||||
| K | Kings Dyke | EMP | 96m 73ch | 26 September 1989 | |||
| KD | |||||||
| RP | Repeater (distant) signals | ||||||
| - | Kingsferry Bridge | Bridge box: line controlled by Sittingbourne (EV) | SEJ2 | 47m 34ch | 10 April 1960 | ||
| KH | Kings Heath | SKN | 44m 21ch | 6 September 1969 | Saltley (SY) | ||
| K | Kingsknowe | Downgraded to gate box 17 August 1981: line controlled by Edinburgh (ES) | ECA2 | 98m 15ch | ≈1875 | 6 February 1983 | Edinburgh (ES) |
| KH | Kings Lynn Harbour Junction | Downgraded to ground frame 14 October 1984 | BGK | 95m 29ch | March 1880 | 10 February 1985 | Kings Lynn Junction (KL) |
| KL | Kings Lynn Junction | BGK | 96m 50ch | December 1879 | |||
| KLD | One signal on Middleton Towers branch | ||||||
| KN | Kings Norton | BAG2 | 46m 75ch | by 1925 | 6 September 1969 | Saltley (SY) | |
| KNE | Kings Norton East Ground Frame | BAG2 | ≈47m 0ch | Saltley (SY) | |||
| KJ | Kingswinford Junction South | Destroyed by fire | KWD | 144m 33ch | 8 February 1916 | 14 November 2001 | Kingswinford Junction South [new] (KJ) |
| KJ | Kingswinford Junction South [new] | Replacement to original building destroyed by fire | KWD | 144m 33ch | 8 December 2003 delayed from 13 October 2003 |
28 August 2012 | West Midlands Signalling Centre (DR) |
| KG | Kingussie | Named Kingussie North to 11 November 1928. Code used from 2002 | HGL2 | 71m 48ch | 1924 | ||
| Kingussie North | See Kingussie | ||||||
| K | Kintbury | BHL | 58m 43ch | ≈1877 | 15 April 1978 | Reading (R) | |
| RK | Kintbury | Downgraded to gate box 15 July 1978: line controlled from Reading (R) | BHL | 58m 43ch | 16 April 1978 | delayed from 23 June 2012 |
|
| K | Original, temporary, code until taken over by Reading (R) | ||||||
| TRK | Code used from 31 December 2010 when line control passed to Thames Valley Signalling Centre | ||||||
| K | Kirby Cross | TWN | 67m 50ch | 1899 | 31 October 1990 delayed from 20 October 1990 |
Thorpe-le-Soken (T) | |
| KS | Kirkby Stephen | SAC | 266m 40ch | 21 October 1974 | |||
| KS | Kirkby Summit | A Kirkby Summit box closed on 18 November 1994 (control to Pinxton), unclear if same box or even same general site | PBS1 | 138m 79ch | 11 September 1995 | 12 September 2011 | East Midlands Control Centre (MS) |
| KT | Kirkby Thore | SAC | 282m 2ch | 25 September 1994 | |||
| K | Kirkcaldy | Code used from 1979 | ECN2 | 25m 78ch | 6 December 1903 | 3 February 1980 | Kirkcaldy [temporary panel] (K) |
| KE | Reported: intended as EK for temporary panel? | ||||||
| EK | Kirkcaldy [temporary panel] | ECN2 | 27m 22ch | 3 February 1980 | 8 June 1980 | Edinburgh (EK) | |
| K | Unclear if code carried | ||||||
| KC | Kirkconnel | Code used from 2002 | GSW | 62m 16ch | 12 February 1911 | ||
| KE | Kirkdale East | SJO1 | James Street (JS) | ||||
| K | Kirkham Abbey | YMS | 15m 2ch | 1873 | |||
| KM | Kirkham North Junction | Demolished 13 December 2017 | PBN | 8m 29ch | 1903 | 10 November 2017 last train; 29 January 2018 official |
Manchester Rail Operating Centre (BL) |
| KS | Kirk Sandall | DOW | 3m 25ch | 30 June 1916 | 17 February 1980 | Doncaster (D) | |
| K | |||||||
| KN | Kirksanton | Gate box: line controlled by Silecroft (ST) | CBC1 | 47m 8ch | |||
| K | Kirkstall Junction | TJC3 | 197m 78ch | 1910 | 4 July 1994 | Leeds (L) | |
| RK | Repeater signals | ||||||
| K | Kirton Lane Crossing | Downgraded to ground frame 15 October 1972: line controlled by Doncaster (D). Unclear if code carried | DOW | 8m 47ch | 1886 | 29 June 1980 | Doncaster (D) |
| K | Kirton Lime Sidings | MAC3 | 86m 20ch | 1886 | |||
| KL | |||||||
| KLS | At least one signal | ||||||
| KS | Kiveton Park Station | Code used from 26 October 1980 | MAC3 | 51m 54ch | 1916 | ||
| K | Knaresborough | HAY1 | 16m 55ch | 1873 | |||
| LE | Knockholt | XTD | 16m 41ch | 1898 | 1 August 1973 | Ashford (US) | |
| K | Knottingley | Named Knottingley Depot East to 8 January 1967 | WAG1 | 59m 27ch | 26 August 2006 last train; 29 August 2006 official |
Ferrybridge [new] (FE) | |
| Knottingley Depot East | See Knottingley | ||||||
| Knutsford | Named Knutsford East to 1 May 1966 | CDM2 | 14m 36ch | 1886 | 27 October 1996 | Mobberley (MY) | |
| Knutsford East | See Knutsford | ||||||