Signal box prefix codes

A (hopefully) comprehensive listing

'Boxes beginning I

Last update 5 December 2008

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
I Ibrox Junction   AYR1 c2m 1ch ? 3 September 1967 Glasgow Central (G)
G Temporary code until control passed to Glasgow
IC Ilford Carriage Sheds Also called Ilford Car Sheds LTN1 8m 14ch 26 September 1949 29 March 1997 Liverpool St (L)
RIC Banner repeater signals
DE Down electric line automatic signals
DM Down main line automatic signals
UE Up electric line automatic signals
IS Ilford Station   LTN1 7m 17ch 26 September 1949 24 August 1996 Liverpool St (L)
IY Ilkley Junction   ILK2 211m 7ch 1913 11 July 1994 Leeds (L)
  Immingham East Junction   BRI2 106m 34ch 1912    
IR Immingham Reception Sidings   BRI2 104m 30ch 1912    
D Down line automatic signals
U Up line automatic signals
IW Immingham West Junction   KIL1 105m 5ch 1912    
IM Code reported officially, but probably not carried
I Ingatestone Reduced to gate box 19 October 1996: line controlled by Liverpool Street (L) LTN1 23m 39ch 1905    
IG Unclear if this code carried
D Down line automatic signals
U Up line automatic signals
IH Insch Code used from 2002 ANI1 27m 47ch 1886    
IK Inverkeilor Code used from 2002 ECN4 23m 10ch 1 March 1881    
V Inverkeithing Central Junction   ECN2   8 November 1914 30 July 1979 Edinburgh (EV)
I Inverness Code used from 1987 HGL2 117m 77ch 8 March 1987    
WCK 0m 6ch
IE Inverurie Code used from 2002 ANI1 16m 79ch 10 February 1902    
IS Irchester South   SPC2 62m 8ch   6 December 1987 Leicester (LR)
  Ironbridge Power Station See Buildwas Power Station Control Room
V Ivybridge   MLN1 235m 27ch c26 April 1895 8 December 1973 Plymouth (P)

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

 

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