Signal box prefix codes

A (hopefully) comprehensive listing

'Boxes beginning Q

Last update 20 November 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
QJ Quarry Junction PED2 7m 45ch 19 April 1960 17 November 1985 Jumble Lane (J)
QJ Queensferry Junction EGM1 42m 42ch 9 October 1949 30 April 1978 Edinburgh (EN)
D Down direction automatic signals
QP Queens Park [London] CWJ 3m 66ch 26 March 1905 10 December 1988 (or 1991?) Willesden Suburban (WS)
RQP Repeater signals
WD Queens Road [London] Named Queens Road West to 17 May 1936 BML1 2m 65ch 1898 25 May 1990 Wimbledon (W)
Queens Road West See Queens Road [London]
R Queens Road [Manchester] Distant signals MVB1 1m 36ch 1904 14 July 1991 Line transferred to Manchester Metrolink
Q Queen Street EGM1 0m 17ch 1881 26 February 1967 Cowlairs (CQ)
QW Queen Street West Code used from 1935 NEM3 0m 44ch 15 March 1886 8 February 1960 High Street Junction (HS)/ Kelvinhaugh Junction (K)
QE Queensville LEC2 132m 30ch 3 February 1935 between 29 May 1960 and 28 May 1962 Stafford No 4 (SD4)
Q Quintinshill Code used from 1971 WCM1 10m 19ch 25 September 1903 7 July 1973 Carlisle (CE)