Clive D. W. Feather wrote:

However, now I've got my bearings: the ramp in Chris's outside
picture
(um, http://gallery120232.fotopic.net/p13277478.html) goes down
behind
the offices which, I agree, might not have been as wide as platform
1.

Underneath that slope was a British Railways Staff Association-owned
gymnasium, certainly as late as the mid-1970s.