biker boots and the Camper shoes are always a good transition choice for this kind of not cold not hot weather.
It has been very tricky cycling through central London over the past couple months due to the road works. The City is in a rush to get everthing ready for the Diamond Jubilee and Olympics which has involved lots of detour routes and narrow lanes. Bishopsgate, a road I use once a week on my way to evening class is now fully open again. My one worry is that when everything is back in place will they remember to replace the cycle lanes and junctions. These are always the first to go and the last to be replaced.