(20 Jan 2022, 4:27 pm)54APhotography wrote I'm assuming this is a work in progress? There's more missing than that are shown!

The one that jumps out to me, is the line which went to Phili Depot and had the spur with the Leamside line at Elba Park.

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(20 Jan 2022, 12:08 pm)Adrian wrote Came across this site, which I thought may be of interest to members. Shows the extent of historic railways across the UK: https://www.railmaponline.com/UKIEMap.php

Intrigued about that collection of lines near Frankland Prison. 
Can vaguely remember some concrete buildings in that area, but can't remember what they were for. 
Didn't know there were any lines there at all.