Edinburgh still has one near Haymarket depot, and Dumfries is still going (but with strange opening hours).
Most of the famous (and infamous!) ones have gone sadly; back in the day I had the pleasure of visiting East Croydon (demolished), Waterloo (a gem, but now escalators), Inverness (now derelict), Hounslow (long gone), Old Oak Common (ditto) and York (good to hear it's still going). Brunswick House at Vauxhall is now a posh restaurant. Not sure about Feltham....
Also managed Camden Town and Morden LT Clubs....nice memories(hic)!