Cycling in London really is the best way to get around. Faster than the tubes and buses. Reliable. Anyone that has experienced tube delays will know what I am talking about. However it can be dangerous. Never never get on the left hand side of a lorry.
A fatality occurred on this spot on the corner of York way and Pentonville Rd a few days ago. More information is on this blog I came across recently, Cycling in London, Olaf has created a spreadsheet recording all cyclist accidents in London since 2006. He remains a cycle enthusiast despite its dangers. Great site for all London cyclists.