That doesn't detract from the fact that too many cyclists in London ride like twunts. Too fast, and too aggressively. Very important people having very important days of course. I expect they're on their way to a Range Rover and high blood pressure. They have to start somewhere.
I use CS3 along the Embankment most days. It's alarming how many cyclists coming the other way will come over to my side of the path to overtake slower cyclists, leading to some very near misses. Some people need to learn that the flip side of having all this lovely cycling infrastructure is that greater numbers of cyclists means accepting that sometimes you will be stuck in bike traffic - and understand that as with driving a car, you are part of that traffic.
Mind you, I've yet to observe an actual collision, and personally will always take evasive action rather than run into another cyclist to prove a stupid point.
I see quite a few wheel prangs on CS7, mostly minor, usually starting gate incidents (the usual suspects who like to the speed to the front at the lights and then do the s l o w start because they take an advanced period of entertainingly annoying wobbling before they finally achieve forward motion which is then slow because low gears are for girls). Close overtakes by the lycra boys are a guaranteed form of intimacy. I generally assume they just want to get me know better. I have nice buns.
I'm generally not annoyed*, it's just wry observation of the cycling clades of London, I rumble through the London suburbs like a cycling Desmond Morris. I think in part it's selective pressure, to be a cyclist in London still favours the young and brave, who view themselves as immortal and all-knowing (hey, I was young once, I get it). Plus they're mostly blokes and it's a thing about men, whether they know it or not, that they have to compete. I always put it down to a misplaced evolutionary imperative to impress potential mates. The irony, of course, is that there are usually more women at a Muslim Brotherhood meet than there are commuting down CS7 (in the spirit of the balance, there's probably more Muslims at a WI meeting; the entire London commute is less diverse than a KKK rally). As for potential mates who aren't on bikes, any appreciation is more likely to be delivered as a dopplered
Waaaaaanker!*well, the other day as I aborted an overtake of a cyclist in front of me because there was a big puddle, the chap who then decided to shimmy between us, nudging us both, and for bonus points then spraying us with Brixton's finest vintage road water. I might have been a tad annoyed then.