Irlam on the Warrington to Manchester line has a fantastic collection of signals and the station building is a cafe, worth a trip if you're in the area
About the most complex 'signalling' shot you can get with RETB
(Top down)
Points indicator with theater box
Stop Board
TPWS status indicator
TRTS buttons (one for each direction for each platform)
Crainlarich is the junction of the Fort William and Oban lines
A signal you won't see pulled off much now, this is WT9880 at the up end of the down slow platform at Hemel Hempstead. It has been used recently for Southern services that turn back here. After today these services will no longer run (terminate at WFJ). NR rejected the paths