The Guardian carries an article examining the three major candidates' policies for London (or those which have been so released so far).
You can find the whole article here - this is a section which we have been working on for some time, and which will soon be displayed in the upper menu bar for your ease of access.
Before that article is complete however, additional policies announced since the above tally was released include:
Boris Johnson: proposals for 'Heathrow-on-sea'
Boris Johnson: removal of Oyster cards from violent and rowdy youths
Ken Livingstone: London wide bike / walking scheme