And only a short while later, news from the police! Dude has admitted it, and is therefore only getting a caution, which is frustrating in a way, but I am relatively happy with it as an exchange for being able to be rung up by the police and have them say "Sorry we didn't get back to you sooner, we spent all day yesterday in a car with him, driving him around London trying to get him to admit to doing it in other places! Like St. James's Park! He did in the end. Anyway, he wanted to come round and apologise to you, but we said no."