By Adam Bloodworth The loss of London’s gay bars is a loss to the LGBTQ community’s own history, which is woven into the bricks and mortar, writes Adam Bloodworth London’s full of nice old things, isn’t it? It’s kind of our whole deal. Think of the restaurants: Sweetings in the Square Mile, Rules in Covent Garden and Brasserie Zedel, venues which all got their hundredth birthday card from the Queen yonks ago and feel as if they get evermore popular purely because of their history. In a city where half of new openings close within the first two years, it’s the oldies that intrigue us most. But,…