Well it certainly appears to be at my 4-year old DS's school.
So far in the last two weeks he has allowed another boy to cut the knees out of his school trousers, cut his own hair, sampled the water used for washing brushes and felt-tipped all over another child's white shirt (ironically belonging to the lad who cut his trousers.
Should we be worried?
I have to add he's an extremely outgoing and happy child.
To think that London, or anywhere else for that matter, does not belong to any one demographic