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District Dave's London Underground Site :: Other London Underground & TfL Railways Matters :: Signalling and Track :: LT Cabin/signal box Codes Met/Dist 1905-2006
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AuthorTopic: LT Cabin/signal box Codes Met/Dist 1905-2006 (Read 790 times)
motormanmet
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LT Cabin/signal box Codes Met/Dist 1905-2006
« Thread Started on Nov 8, 2006, 4:06pm »
Digging through some old paperwork and found a comprehensive list of most, if not all signal box codes from the beginning of auto signalling on the District in 1905 to today - hopefully this may answer many questions. Please correct any you feel wrong, but this list is from LT so should be 99.99% (even if it looks iffy!) Tube lines to be done in a following post.

DISTRICT LINE
Codes west of Earl's Court were prefixed 'W' and east of Earls Court 'E' under the original 1905 series.
WA - Earls Court West 1905-36 (taken over by EC Cromwell Rd)
WB - West Kensington East 1906-
WC - West Kensington West 1906-
WD - Hammersmith 1906- (took over Picc in 1931)
WE - West Brompton 1906-71 (GF emergency crossover)
WF - Parsons Green 1905-
WG - Putney Bridge 1905-
WH - Unused
WJ - Unused
WL - Turnham Green 1911-
WL - Acton Town 1905-
WM - Ealing Common 1905- (plus Hanger Lane Jn 1925- )
WN - Unused
WO - Hanger Lane Jn 1905-25
WP - Ealing Broadway 1905- (plus Central Line from 1952)
WQ - South Acton 1905-32 (line then single tracked)
WR - Northfields (1916-32 for GF crosover) 1932-
WS - Hounslow East/Town 1905-23 Boston Manor IMR 1974-
WT - Hounslow Ctrl 1913-76 IMR 1976-
WU - North Ealing 1907-71 (GF emergency crossover)
WV - South Harrow 1932-
WW - Sudbury Hill 1933-66 (GF emergency crossover)
WW - Hatton Cross IMR 1975-
WX - Hounslow West 1913-75 IMR 1975-
WY - Heathrow Central IMR 1977-

EA - Earls court East 1905-36 (taken over by EC Cromwell Rd)
EB - High St Ken 1907-36 (taken over by EC Cromwell Rd)
EC - Cromwell Rd 1906-67 controlling Earls Ct E/W, High St IMRs
EC - Earls Court (Main) IMR 1966- (replaced E/W IMRs)
ED - Unused until High St Ken IMR 1967-
EE - South Kensington 1906-57 (IMR controlled by EC 1957-67)
EF - Unused until South Kensington IMR 1967-
EG - St James' Park 1905-67 Mansion House IMR 1973-
EH - Embankment 1905-66 IMR 1966-
EI - Mansion House ?-1969 IMR 1969-73 (recoded EG)
EJ - Possibly Mansion House pre-EI? Documentation unclear
EK - Minories Junction 1906-09 (taken over by Aldgate East EL)
EL - Aldgate East 1906-46 (taken over by Aldgate Met OB)
EM - Unused (possibly reserved for St Marys Jn?)
EN - Whitechapel 1907-
EP - Bow Road 1907-64
ER - Surrey Docks/Quays 1950- (GF Emergency crossover, was C)
ES - Unused
ET - Canal Junction (plus Deptford Rd) 1950-1997 (was E)

EAST LONDON LINE
Partly recoded under District 'E' series 1950
A - Shoreditch 1913-43 (Whitechapel B controlled 1928-43)
B - Whitechapel (East London) 1913-59 (taken over by EN)
B - Whitechapel IMR 1959- (controlled by EN)
C - Surrey Docks 1913-50 (GF emergency crossover, recoded ER)
D - Deptford Road Jn 1913-50 (GF emergency crosover)
E - Canal Junction 1913-50 (recoded ET)

MET ORIGINAL CIRCLE LINE SERIES
A - Praed St Jn 1908-26 (taken over by Edgware Rd B, then OP)
A - Baker St Met/Circle 1913-28 (recoded M)
B - Edgware Rd 1907-51 (recoded OP)
C - King's Cross 1908-58 (recoded OJ)
D - Farringdon 1909-56 (recoded OH)
E - Aldersgate (Barbican) 1909-54 (recoded OG)
F - Moorgate 1909-56 (recoded OE)
G - Liverpool Street 1910-54 (recoded OD)
H - Aldgate 1909-46 (recoded OB)
J - High St Ken (Met only) 1909-26 (taken over by District EB)
K - Gloucester Rd (Met only) 1909-52 (recoded OQ)
L - South Kensington (Met only) 1909-49 (recoded OR)
M - Baker St Met/Circle 1928-47 (recoded MB)

HAMMERSMITH BRANCH ORIGINAL SERIES
A - C Unused
D - Westbourne Park 1921-50 (recoded OS)
E - Ladbroke Grove 1921-50 (recoded OU)
F - Latimer Road 1921-50 (recoded OV)
G - Unused
H - Hammersmith 1921-51 (recoded OZ)
Signals at Paddington Bishops Rd (Suburban) were controlled by GWR and later BR(W) and were coded 'V' at some stage.

CIRCLE LINE SERIES - PRESENT
OA - Unused
OB - Aldgate 1946-88 IMR 1988-
OC - Unused
OD - Liverpool St 1954-56 IMR 1956-
OE - Moorgate IMR 1956-
OF - Unused
OG - Barbican IMR 1954-1979 (sidings and crossovers removed)
OH - Farringdon 1956- (from 2001 controlled by Baker St SCC)
OJ - Kings Cross (Met only) 1941-58 (GF emergency crossover)
OJ - Kings Cross (Met/Widened) 1958-1979
OJ - Kings Cross IMR 1979-
OK - ON Unused
OP - Edgware Rd 1951-
OQ - Gloucester Rd (Met only) 1952-57 (taken over by EC)
OR - South Kensington (Met only) 1949-57 (taken over by EC)
OS - Westbourne Park 1950-71
OT - Unused
OU - Ladbroke Grove 1950-83
OV - Latimer Road 1950-57
OW - OY Unused
OZ - Hammersmith 1951-

MET MAIN ORIGINAL SERIES
A - Baker Street 1913-28 (recoded M)
B - Lords 1910-37 (recoded MC)
C - Finchley Road 1911-37 (recoded MD)
D - West Hampstead 1911-37 (taken over by Finchley Rd MD)
E - Willesden Green 1911-38 (recoded ME)
F - Neasden 1911-38 (taken over by Neasden South MF)
G - Wembley Park 1911-37 (relettered MG)
H - Harrow South 1908-48 (recoded JB, worked from Harrow JB)
J - Harrow Station 1908-48 (new box JB)
K - Rickmansworth 1910/24?-53 (new box JP)
L - M Unused
N - Harrow North 1908-48 (recoded JB, worked from Harrow JB)
P - Rayners Lane 1925-85 (recoded MP)
Q - S Unused
T - Eastcote 1930-48 (recoded MS)
U - Ruislip 1930-48 (recoded MT)
V - Hillingdon 1930-48 (recoded MV)
W - Uxbridge 1930-38 (new box coded MW)
Y - Stanmore 1932-39 (remote controlled by Wembley Pk)

WATFORD LINES SERIES
A - Watford 1924-48 (recoded JL)
B - Croxley 1924-70
C - Watford Junction (Croxleyhall) 1924-55 (taken over by JP)
D - Moor Park 1924-53 (GF controlling goods siding and 1 signal)
E - Northwood 1924-62 (replaced by IMR JF)
F - Northwood Hills Siding GF 1924-53
G - Pinner 1924-62 (replaced by IMR JD)

J - MET JOINT LINE SERIES
JB - Harrow-on-the-Hill 1948-
JC - Unused
JD - Pinner IMR 1962-70 Finchley Rd Jub 1984-
JE - Northwood Hills Temp Box 1961-62 Willesden Gn Jub 1984-
JF - Northwood IMR 1962- Neasden Jub 1984-
JG - Moor Park 1962-71 (handworked crossover) Wembley 1984-
JH - Unused
JJ - Watford South Jn (Croxleyhall) IMR 1962-
JK - Unused
JL - Watford 1948-58 (taken over by Rickmansworth JP)
JL - Stanmore 1984-
JM - JO Unused
JP - Rickmansworth 1953- (1955-58 Watford S Jn, Watford 1958)
JQ - JR Unused
JS - Chorleywood 1954-70
JT - Chalfont 1949-59 (JW 1959-60) IMR 1960-
JU - Unused
JV - Chesham 1949-70
JW - Chalfont 1959-60 Amersham 1960-

MET 'M' SERIES
MB - Baker Street 1947-
MC - Lords 1937-71 (replaced by Swiss Cottage crossover ML)
MD - Finchley Road 1937-
ME - Willesden Green 1937-85 (recoded JE - Jub only)
MF - Neasden South 1938-87 (replaced by Neasden IMR MM)
MG - Wembley Park 1937-87 IMR 1984-
MH - Neasden North 1939-87
MJ - Canons Park 1941-76 (GF emergency crossover)
MK - Stanmore 1939-86 (IMR JL from 1984 replaced MK)
ML - Swiss Cottage IMR 1964-
MM - Neasden IMR 1985-
MN - Unused
MP - Rayners Lane 1985-
MQ - MR Unused
MS - Eastcote 1948-66
MT - Ruislip 1948-75
MU - Ruislip Siding IMR 1975-
MV - Hillingdon 1948-66
MW - Uxbridge 1938-
MX - Dollis Hill 1938-39 (temporary box)
MY - Unused
MZ - Preston Road 1938-48
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Colin
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #1 on Nov 8, 2006, 4:47pm »
A few corrections on the District (present day):

WB - West Kensington (east) & Olympia
WD - Barons Court & Hammersmith
WK - Turnham Green
EE - Gloucester Road
EJ - Tower Hill
OB - Aldgate & Aldgate East

What happend to the East end of the District on your list? ;D ;D
FB - Bromley-By-Bow
FC - Plaistow
FE - East Ham
FF - Barking & Upney
FG - Dagenham East
FJ - Hornchurch
FM - Upminster

Also missing are:
GB - Gunnersbury to Richmond*
W - East Putney - Wimbledon*

* = Network Rail signals; code is used on other lines too.
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motormanmet
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #2 on Nov 8, 2006, 4:56pm »
For some wierd reason, forgot to include F-prefixed codes east of Campbell Rd - sorry!

Two points of interest - According to my LT paperwork, 'FD' was originally to have been the code for East Ham.

Also, there seems to be a long-standing anomoly regarding the LMS signalling between Campbell Rd Jn and Upminster. From Campbell Rd to a point beyond Barking, the signalling used was NOT the type used on the Watford New Lines. This was straight two-aspect signalling in standard two-lamp signal heads (manufactured by SGE) with LT fog repeaters provided. This was completed in 1932. The signalling from beyond Barking to Upminster was of the Watford-type, provided between 1932-33 when the extra District tracks were completed.
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motormanmet
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #3 on Nov 8, 2006, 4:59pm »
Heh heh also noticed WL - Turnham Green is a typo, should read WK. Didn't include EJ - Tower hill - thanks Colin!

Did not include GB and W as they are codes for Network Rail controlled signalling.
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DistrictSOM
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #4 on Nov 9, 2006, 3:24pm »
EAST LONDON LINE
Partly recoded under District 'E' series 1950
A - Shoreditch 1913-43 (Whitechapel B controlled 1928-43)
B - Whitechapel (East London) 1913-59 (taken over by EN)
B - Whitechapel IMR 1959- (controlled by EN)
C - Surrey Docks 1913-50 (GF emergency crossover, recoded ER)
D - Deptford Road Jn 1913-50 (GF emergency crosover)
E - Canal Junction 1913-50 (recoded ET)



whitechapel on the ell cabin code B is no longer since re-signalling controlled from whitechapel cabin EN its controlled from new cross depot control room
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #5 on Nov 9, 2006, 7:33pm »
I don't know when the floodgates were introduced, but there must have been some forward planning as the FD code is now used to denote floodgate X signals (FDX).

EDIT: I'm interested to know where FH, FK, and FL disappeared to (assuming they were ever used).
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #6 on Nov 9, 2006, 10:32pm »
Re Whitechapel I thought the IMR was now controlled from New X depot the controllers diagrams still show code B.
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #7 on Nov 10, 2006, 1:09am »
Whitechapel ELL is indeed still coded B.
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #8 on Nov 10, 2006, 1:46am »
Yep that's right 24 shaft frame of which 12 are spare N/E of SB platform.
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Harsig
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #9 on Nov 10, 2006, 9:37am »

Quote:

MET ORIGINAL CIRCLE LINE SERIES
A - Praed St Jn 1908-26 (taken over by Edgware Rd B, then OP)
A - Baker St Met/Circle 1913-28 (recoded M)
B - Edgware Rd 1907-51 (recoded OP)
C - King's Cross 1908-58 (recoded OJ)
D - Farringdon 1909-56 (recoded OH)
E - Aldersgate (Barbican) 1909-54 (recoded OG)
F - Moorgate 1909-56 (recoded OE)
G - Liverpool Street 1910-54 (recoded OD)
H - Aldgate 1909-46 (recoded OB)
J - High St Ken (Met only) 1909-26 (taken over by District EB)
K - Gloucester Rd (Met only) 1909-52 (recoded OQ)
L - South Kensington (Met only) 1909-49 (recoded OR)
M - Baker St Met/Circle 1928-47 (recoded MB)



This particular list seems to have stopped prematurely. The following should be added

M - Farringdon (Widened Lines) until 1924 (taken over by Farringdon D)
N - Smithfield (Widened Lines) 1909-1918 (taken over by Aldersgate P)
P - Aldersgate (Widened Lines) until 1924 (taken over by Aldersgate E)
Q - Whitecross Street (Widened Lines) until 1916 (taken over by Aldgersgate P)
R - Moorgate (Widened Lines) until 1926 (taken over by new Moorgate F)
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motormanmet
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #10 on Nov 10, 2006, 9:52am »

Quote:

Quote:

MET ORIGINAL CIRCLE LINE SERIES
A - Praed St Jn 1908-26 (taken over by Edgware Rd B, then OP)
A - Baker St Met/Circle 1913-28 (recoded M)
B - Edgware Rd 1907-51 (recoded OP)
C - King's Cross 1908-58 (recoded OJ)
D - Farringdon 1909-56 (recoded OH)
E - Aldersgate (Barbican) 1909-54 (recoded OG)
F - Moorgate 1909-56 (recoded OE)
G - Liverpool Street 1910-54 (recoded OD)
H - Aldgate 1909-46 (recoded OB)
J - High St Ken (Met only) 1909-26 (taken over by District EB)
K - Gloucester Rd (Met only) 1909-52 (recoded OQ)
L - South Kensington (Met only) 1909-49 (recoded OR)
M - Baker St Met/Circle 1928-47 (recoded MB)



This particular list seems to have stopped prematurely. The following should be added

M - Farringdon (Widened Lines) until 1924 (taken over by Farringdon D)
N - Smithfield (Widened Lines) 1909-1918 (taken over by Aldersgate P)
P - Aldersgate (Widened Lines) until 1924 (taken over by Aldersgate E)
Q - Whitecross Street (Widened Lines) until 1916 (taken over by Aldgersgate P)
R - Moorgate (Widened Lines) until 1926 (taken over by new Moorgate F)


I didn't include these as i have only seen very scant evidence of these boxes ever having been coded, so did not want to assume. The codes you state tally with what i have. The reason for uncertainty is that the Widened Lines were not track-circuited and fitted with auto signalling until 1924-26 so it is unlikely these codes would have been carried by signals, though the sources i and harsig are working from would at least suggest the codes were used for reference.
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #11 on Nov 10, 2006, 12:12pm »
Also noticed Hornchurch was changed from planned code 'FK' to 'FJ' around 1959.
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Re: LT Cabin/signal box Codes Met/Dist 1905-2006
« Reply #12 on Nov 15, 2006, 3:10pm »
Barons Court WC IMR in service 1961? taken out 1983 Feb now only a relay room.
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