Signal box prefix codes

A (hopefully) comprehensive listing

'Boxes beginning J

Last update 18 November 2023

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 ELRMileage Opened Closed Control to
C James Street Code shown on 1934 plan MIR1 1886 7 May 1977 James Street [new] (JS)
RC Repeater signals. Code shown on 1934 plan
S Automatic signals. Code shown on 1934 plan
JS James Street [new] MIR10m 51ch MIR12m 03ch 1 May 1977 18 September 1994 Merseyrail (ML)
JC Jetty Ground Frame Frame extended 24 October 1971 RLY by 1971 Upminster IECC (UR)
Joan Croft Junction Gate box: line controlled by Doncaster (D) ECM2160m 49ch ?
J Jumble Lane PED26m 59ch 29 October 1900 11 April 1998 Barnsley (BY)
JR Junction Road Junction GOJ0m 58ch TAH12m 42ch 26 November 1882 10 November 1985 Upper Holloway (UH)
J Jurgens Crossing Stop boards TLL17m 09ch 27 May 1996