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.
The Hayward Gallery in Southbank center has held my favourite exhibitions in London and each time they are extremely well curated. Definitely a place to visit !
The gallery was extended into a neighbouring Victorian House space about a year and a half ago, with a real skill in judging the meeting point between the contemporary and the conserved. The architects — 6a — were also responsible for Raven Row near Spitalfields (another favourite place). I'm lucky enough to work part of the week next door, at Camberwell College of Arts. This is about great food and good books. The café — a real haven at breakfast time before work — is run by the nicest team of people, with intertwined relationships to Camberwell. This book, designed by James Langdon, represents the kind of find possible in the bookshop and also the quality of conversation content had, over the best coffee.
Audiophile paradise. Boasting one of the coolest looking and beautifully crafted sound-systems I've ever seen. More listening bar than club, it has a low key vibe with a diverse roaster of talented DJ's spinning an eclectic mix of tunes and full albums.
A short walk from Oxford Circus tube station, Kaffeine is easily one of the best coffee houses in London. Whenever I'm working in the area I pop in beforehand to kick start my day with a well-made cappuccino.