TFL currently have an exhibition on about the current and forth coming upgrades to various Tube lines. They just happened to host it in a station that’s been closed since 1994 that geeks like me would love to have a look inside. What a clever ploy. The station in question is Aldwych (formerly Strand before Charing Cross was renamed Strand for a while, all very confusing). Since closing it has been used for filming, training and private hires. The exhibit takes up the majority of the ticket hall; the platform level was off limits. The info on display can be seen online anytime, I was there to take a poke around.
The Surrey Street entrance and exit.
There’s a few more photos to see over at Flickr.