I parked Little Willie next to a rather nice Douglas Dragonfly and eventually got to speak to its owner, a local window-cleaner, Dave (I think his name is) who is quite a celebrity in our town, fighting off the Dragon on St George's Day every year!
Quite a few people gathered round the two British bikes, expressing admiration for the way they looked. Dave told me something I hadn't realised; BMW 'pinched' the horizontally-opposed cylinder arrangement from Douglas. Not a lot of people know that!