The building was meant to have a very wide frontage but without much depth as can be seen in the photo. I never ever saw an aircraft in that hangar and the last time I was in there it was full of aircraft seats.
The site is now Harrods FBO but I am not sure whether the hangar was removed or just converted into offices as the footprint is still the same.
The Birds-eye-view in Bing maps still shows the old building.