I am on an Oxford Tube bus at the moment; about half way between the
Hoover Building and the airfield at Northolt, on the same (right) side
of the road there is an unusual building. It seems to be unused at
present, and has 'To let' signs which describe it as a warehouse, but
it doesn't look like one. It has a square tower with a green copper
roof, which looks like it would be more at home attached to a church,
but the building itself doesn't look like a church. There is a star
on the brick/stone work on the front of the building. Does anybody
know what this building was?