Among the pigeons
The reverb was bad when it was first opened and might have been eleven then which was a problem. There was work done on it soon after and I think it is now about seven.I'm from Liverpool originally and I remember the Metropolitan Cathedral being built back in the 60s. It has become an iconic building. The acoustics are challenging with an 11 second reverb.
When I was talking to David Sheppard, (casual bit of name dropping), in the eighties he seemed quite pleased that the Anglican Cathedral reverb was longer by one second.