Hi Phil,
I was interested in you comment re: Bogarts.
"I remember Bogarts for the simple reason we had the contract to strip it out which I think was in the late 90's we stripped the ground floor and the first floor out back to its original condition but everything in the cellar was left as it was even the furniture and all the entrances were bricked up."
After the demise of Bogarts in 1981 the owner and manager converted Bogarts, with the Bier Keller area converted to The American Food Factory. When you did the renovation then surely it must have been this which was sealed up?