Great comic shop that stocks small press, and everything else you'd expect to find. The kids section starts at early ages and has something all the way up.
I can't pass without dropping in, Orcs Nest is a small independent boardgame, D&D etc store that's been around forever(1987)... and has the best logo. Good selection of games for younger kids too.
London’s wildest and best park to get lost in. Just follow your instinct, chase trees, go up to the viewing points and you’ll always find breathing and mindspace in Hampstead Heath. If you can, visit often, as it goes through wonderful changes over the seasons.
Zédel is my absolute favorite restaurant in London. Beside the fact that I love french cuisine, Zédel is aesthetically pleasing, very reasonably priced, is good for any occasion, and of course - delicious. My favorite is the bouillabaisse and a bottle of the Bordeaux Superior.