I recommend trying London Bridge

It is a survival game. Yes, there are many places in London where cycling is safe (the bike path system in Battersea is just fantastic!) but there are a way more places where you need to ride with traffic, and that's not safe. FYI, I did 11 then 12 cycling capable bridges of London in October 2024, all the way from Tower Bridge to Wandsworth Bridge with occasional deviations to Westminster or Lambeth or Nine Elms. So I can say a word or two how it looks like in London nowadays. (I had more rides earlier but none that long).
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The 26th of October, 11 bridges.
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The 27th of October, 12 bridges.
This article only compares violence between London and NYC, LA, Houston and Philly as well as Brussels, Paris and Berlin. Not enough to generalise:
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So it is 1.1 for London and 0.68 for Poland.
I know London is
not safe. A city where a gunman with a sawn-off shotgun runs into the crowd or where young people are so often killed with knives is not safe.