Since it was mentioned on another forum I thought I'd post it here:
At the end of the tunnel you can just see the drill-hall.
We used to spend hours messing around on the upper levels on a Sunday afternoon when there were no shoppers around. I wonder if the little girl in the picture is now reading this?
Edit: the giant bird cage appears to be on the extreme left hand side just out of picture and is attracting the attention of the little girl and her mother. Funny, I always remembered it as being closer to the staircase? Was there not also a Coventry Climax racing car engine in a glass showcase at this end?