A lot of wealthy Americans I might add.
It's a really nice neighborhood, and it was the most American interaction I've had during our whole time in London. There were even basketball hoops in driveways. Driveways! And some of them were handing out actual American Halloween candy. (Halloween candy here is a total let-down.) One woman said her husband had bought bags and bags when he was in the states on business. Mmm mini Snickers and Nerds and Laffy Taffy...
We met back up at London Bridge, the boys changed into their costumes, and we took the tube up to St. John's Wood. When we got there it was still light outside (around 4:30) and pleasantly warm and not crowded at all.
We persevered for a little while but the kids burned out pretty quickly once the darkness and crowds came. Things got scarier for Simon and Mim's feet were hurting. The older kids didn't offer any resistance when we decided to call it a night.
We took the train home, ordered Nando's take-away and ate candy. It was still a British Halloween success.