You may remember I've been a bit cynical about the CS7 Super Highway of late, but my opinion may well be swinging back the other way again after the experiences of 24th March.
Holborn Viaduct is nowhere near as bad as people say, but in general the route West across London was pretty horrid in places. The road too narrow to be able to effectively filter through traffic never mind cycle freely in your own road space without White Van Man, BMW/Audi/Mercedes
Some of the back roads are quiet, but a massive detour, with higher chance of getting lost , making the overall journey longer and there are still idiots who speed and honk at you. And the road surface in general is pretty damned awful. Pot holes, uneven manhole and drain covers, subsided and undulating concrete where the structure under the tarmac simply isn't coping with the physical weight of the traffic (Putney Bridge, oh god!)... it's all well and good the government saying that general policy is to leave road surfaces a bit rubbish in cities to encourage people not to speed in motorised vehicles, but what about the rest of us, eh?
So, while CS7 isn't as protected as it could be, it's hugely better than there not being any provision at all. The experience of cycling through town away from it brought that message clearly home to me.