Springydaffs I am a cyclist and though I don't commute by bike at the moment, I have done so in London for years - ON THE ROAD.
Yes it can be dangerous and yes it can take your breath away - but guess what, I actually have a choice about it.
The reason I stopped cycling to work after 10 years, was a dramatic increase in close call accidents on the road, where I was constantly endangered by OTHER CYCLISTS!! There are so many who are reckless, thoughtless, inconsiderate and frankly in a world of their own, oblivious to other road users. IME they are so much more about ME ME ME than even buses and black cabs, and this is often at the expense of other cyclists. There is no cycling comaradarie these days - it seems to very much be each for their own.
Which is possibly why so many cyclist feel perfectly entitled to cycle on the footpath feeling justified that it is too dangerous for them on the road, without giving proper thought to the danger THEIR cycling on the pavement creates for pedestrians and especially the more vulnerable - babies, small children, elderly and unwell.
I loved cycling to work, and it saddens me that in the end it was other cyclists who ran me off the road, not the buses, taxis or cars. But you know what, I had a CHOICE, as do you. And you are CHOOSING to cycle on pavements and that is totally rubbish behaviour.
If you can't cycle properly where cycling is permitted, park the bike up and walk.