Not that I can see, but then I live and work south of the river. The Olympic Park is in east London and I hear from friends that a certain amount of work has been done to clean things up like the canals etc. and to improve roads. Quite a bit of road works closer to the city too. There have also been improvements in public infrastructure in various parts of London during the past few years e.g. extension of the tube (metro) lines.

The LCC has been critical of the failure to promote cycling to the games. We now have 'cycle superhighways' in London of varying degrees of effectiveness. Cycle Superhighway 2 which is supposed to run from the city centre to the Olympic Park, ends over a mile from the games and there is a lethal junction on the way (though there is a lot of lobbying on this). Here is a link to the LCC page: http://lcc.org.uk/pages/olympic-park.

I've been commuting in London for coming on 20 years and there have been significant improvements since then. But it has taken a long time and we are a long way from being a safe cycling city. In my view, the thing that has made the biggest difference is the increase in the number of cyclists. This has made us more visible and it makes us more difficult to ignore. I also believe that the previous Mayor of London (who is standing for re-election) introduced changes that made cycling a bit safer such as bus lanes and congestion charging. But as we know, it's still an uphill struggle with a lof of prejudice to overcome. Business interests can also get in the way.