We're staying at a friends in Clapham. And he did pull, but we managed to get the girls number and she doesn't know where he is either.
The worrying thing is that it shouldn't have been too hard to find his way back, it's not a complex route or anything. If I'd have been separated I'd have been able to find my way back easily enough. One of our other mates got separated and he got here fine, and he's literally the shittest person for things like that, he forgot his passport when we went to Ibiza for god's sake!