Gifts especially for kids:

Hamleys
The ultimate in toy shops, Hamleys has everything from outdoor toys and construction kits to arts and crafts, board games and soft toys. And, just in case you're dazzled by all the choice, they do gift vouchers too.
The Gifted Goat
A company promising unusual gifts for all occasions, with a website featuring a large games and toys section. There's an emphasis on traditional wooden toys but you can pick up almost anything here including tin toys, pretend play and puppets.
Letterbox
This is a kids' paradise, with dolls' houses and traditional toys rubbing shoulders with outdoor toys, educational toys, fancy dress and party supplies. The perfect solution if you're buying for a youngster.