When a museum operates an “appointment only”policy, you know it’s going to be a bit on the obscure side. The Fire Brigade Museum occasionally holds Open Days, when the doors of the quiet-looking townhouse are flung open to reveal a host of Fire Brigade memorabilia inside. They have firefighting demonstrations outside and visits from the “Fire Dog”, to the delight of small children. But just when you think you’ve seen everything you need to see, you cross the courtyard to find a garage full of vintage fire engines, with firefighter uniforms to try on. An interesting, if unassuming, slice of London’s history.