There's one in one of the B.N.F.L. office blocks at Risley -well it was there 20 years ago.
There were actually three at the B.N.F.L. office blocks at Risley - two in 'E' Block, and one in 'A' Block. Like Bob, I don't know if they're still there - we're talking 20yrs+ ago.
Great fun - especially 'going over the top'. Never heard of anyone being hurt on one either.