I’m gonna take a safe guess that London has generally much smaller streets and cars than the majority of America, so it would be safer yes. Outside of the cities and a couple of streets downtown smaller town centres, most cars are likely to be going 50km/h or more down a road with spotty or missing sidewalks and there’s probably a 50% chance of it being an F150. Now I have had good luck with drivers here slowing for me, but it only takes one time to be permanently crippled… So is it “that” bad? Depends what your “that” is, but it is worse yes.