In terms of good DW related sights in London, The Who Shop is great. It isn't in central London but it's within the Tube network. Also there's a little bit of stuff in the science museum (which is a cool day out anyway)
KICKSTARTER IS COMING! 9 MAR 2014 — Proven Lands is a procedurally generated science fiction sandbox roguelike. Survive a spaceship crash, enjoy an optional scripted story, or an AI storyteller. Fight your ambitions, emotions and diseases. Gather resources, craft, farm, build stuff, and destroy and dismantle whole alien worlds. Space travel. Modding! Co-op multiplayer, additional classes and underwater planets as stretch goals! Btw, KS ships with a free pre alpha demo. — Press kits on Wednesday! With a story intro video. Yep, we’re just a super small bunch of sci-fi nerds. Join our journey and tell a few friends about us.