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6 October 2020
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19 July 2015

SRS Logo    The Signalling Record Society

London Underground Northern City Line
Signalling Notices Digital Archive

Most documents in the digital archive are in PDF format. However, some larger files may be in JPG, PDF, PNG or TIF format. The files are supplied strictly “As Is”. The entries in each list will make it clear what is available to download and what is only available by other means.

Please do not pass copies of the files around, instead ask interested persons to contact the Society to obtain their own copy. In terms of copyright, British Railways (Residuary) Ltd confirmed to the Society that it was 'not interested' in historical documents that had outlived their operational usefulness and this line seems to have been followed by Railtrack and now Network Rail, as may be evidenced by the quantity of modern material that has entered the public domain through eBay and other auction houses and second hand bookstalls. Similar advice has been received from London Underground in respect of material obtained lawfully from their staff or is already in the public domain.

If there is a download link in the left hand column, the notice concerned may be downloaded free of charge but bear in mind that the file may not contain all the items listed. Otherwise, if there is a “Members' Download” entry present in the item description, then Members (only) may download a copy of the file. If both links are present then Members will sometimes find additional information or a cleaner copy is available by using the “Members' Download” link.

Members will find the information needed to Log-in in the Announcements section of the Society's Forum. Be aware that the passwords will change from time to time and without warning. Non-members will need to JOIN the SRS first and then register for the Forum.

Notices flagged with an asterisk (*) are not included in the free download file.

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Recent Additions

Recent additions to the digital archive will be found listed here.


The following items are currently available ...


Notice & Year Extent of Cover Included & Implementation Date RailRef(s)
10 1935 Metropolitan & Northern City lines. Altered arrangements for switching current on and off, Northern City line.
Available on Research Note 42.
MT060
48 1936 Northern City line. Alterations to signals between Moorgate and Highbury, northbound line.
Available on Research Note 42.
MT060
49 1936 Northern City line. Alterations to signals between Drayton Park and Old Street, southbound line.
Available on Research Note 42.
MT060
14 1937 Northern City line. Resignalling of Moorgate station and southbound line between Old Street and Moorgate.
Available on Research Note 42.
MT060
09 1939 Metropolitan and Northern City lines. A.-Alterations to signals at Finsbury Park and Transfer of control to new signal box at Drayton Park; Alterations to points and signals at Wembley Park.
Available on Research Note 42.
MT030
MT060
18 1939 Northern City line. Change of current rail system and exchange of rolling stock.
Available on Research Note 42.
MT060
48 1941 Northern City line. Control of signalling at Finsbury Park.
Available on Research Note 42.
MT060