On Tue, 3 Oct 2017 14:48:48 +0100, "
wrote:

Can anybody recommend any links to information about the lineside signs
on the DLR as well as on the Jubilee Line? I have looked around, though
cannot seem to find anything.

Most of what looks like a shortage of info seems to be found by
looking for images and their associated captions and/or discussions,
e.g.
http://districtdavesforum.co.uk/thre...alling-neasden
https://nick86235.smugmug.com/keywor...round;signals/
for search term "Jubilee Line signals"

There is an archive of back issues of Underground News :-
http://www.lurs.org.uk/historicalarchive.htm
up to 1987 which might have details for the DLR.