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.
Inspired by Dave Eggers’ projects in the USA such as the Pirate Store in San Francisco and Superhero store in Brooklyn, The Monster Supplies Store in Hoxton is home to the Ministry of Stories: A volunteer run organization, founded by Nick Hornby, to help young people with creative writing of all kinds through workshops and free mentoring sessions. The store is the “Purveyor of quality goods for monsters of every kind” with fascinating bottles and tins containing everything from eyeballs to Zadie Smith’s short story Mortal Terror.