This has no licence attached so we'd have to do some digging (and probably request permission from SMBC).

If they say no then we can revert to survey + aerial images - I'm doing this in Stockport Market, which is an easier project (smaller, no car park on top) and they didn't have a map.

Also: don't trust it, because it's wrong (outdated) in places (the redevelopment bits are now redeveloped!) :)