I still don't understand cyclists who think they have any chance of competing with multi-ton vehicles on roads designed and maintained with those vehicles in mind.
Yeah vehicles have a role to play in road safety but cyclists just need to be more acutely aware that they're effectively bringing a knife to a gun fight and playing on the opponent's home turf.
When I use my bicycle I stick to pavements/paths where possible. I still get to where I want to be fast enough, I don't create nuisances for vehicular traffic and most importantly, I'm not getting sucked under the bumper and wheels of a metalic speeding box.
I prefer my chances in a potential cyclist on pedestrian collision, which I don't have because I always slow down and even dismount if pedestrians are too thick and heavy on the path.
Oh and I'd never cycle in London, it doesn't need saying that the roads and streets in London are not...optimal for the role they fill.