I'll be honest, I just put "Grand Variety theatre Kent" into a search engine (DuckDuckGo) and out popped the Gillingham theatre/picture theatre. The odd thing was that the site mentioned it closed in 1960, was demolished in 1965, then had a nice red box inviting me to click there to book tickets! I think I'd need a famous blue police box to see anything there.
Next one up tomorrow.