Population density? Get real - were not driving through peoples bedrooms. Per capita Greater London actually has lower car ownership than most UK cities, and it's the roads where we ride, not peoples living rooms.
Here are photos of 3 x UK town centres during rush hour. One of them is London. From a cycling perspective London isn't terribly different to the other to. The congestion, traffic, dangers and risks are identical. Get over yourself.
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And the Greater London road casualty rate is far from the highest in the UK. Indeed, per capita the semi rural county of Northamptonshire has a higher rate of death or serious injury - uep, statistically you're less li,rely to die on the roads of Lindon than poor old
@PeteXXX cycling around his manor.
London is a city. BIgger than any other in the UK, but at heart little different aside from that. Its roads are safer than many other cities. This idea that London is a special case and requires prescient reflexes and death ninja skills simply to stay alive is complete, utter rubbish.
So to recap:
Lower per capita car ownership.
Not the highest per capita casualty rate by a long chalk.
The same laws of man apply.
The same laws of physics apply.
And the last time I checked the cheeky cockney chappies still put their trousers on one leg at a time.