Scarifying, listening to the details of HGVs beside bike lanes, with lorry drivers having so little vision of cyclists in those lanes. That restricted vision seems odd, in some respects: I rented a big white Ford cube van for a weekend last year, and it had small convex mirrors on the bottom of the large rearview mirrors, precisely to ensure that the driver could see the road surface and the sides of the big van on both the driver's and passenger's sides. Worked very well for the 1000 or so kms I did on that weekend, in both city and country traffic. Perhaps the greater height of the driver's position in an HGV makes the critical difference.
An Ottawa cyclist was killed in a similar type of collision late last summer on a major suburban arterial road. Obviously, our population is much smaller and less dense than that of London, but the speed of traffic on arterial roads is *much* higher.
Safe journey to all London cyclists. - J.