You can't enter Hamleys without wanting to play with stuff, it's almost torture for some kids. 5 floors of toys from age zero up. You name it, they have it. It can be very busy which means you'll get knocked around by kids as they fly past, trying to convince their parents to buy them something.

Equally the checkout lines can be long too, you'll need nerves of steel to get through all 5 floors at Hamleys.