It's controversial but I see all manner of bikes being quite spirited.
A1 - I ride often, no drama there. Normal A road. I do have others pass me and I'm doing 80+ on the GPS.
North circ - average sections to and from Hanger Lane. Many spots, people seem to be averaging over 40 or 50. Maybe 60?
20mph zones in London. Specifically, along the rear of Kew Gardens. 20, everyone on a bike is 30-35 I would guess.
I'm no stranger to speed and spirited driving or riding, I just choose my times but I'm intrigued by the number of bikes I see in what I would consider high risk (ending up in front of a Magistrate)
I've seen instances of unmarked police, do they just not bother with bikes unless you're being an absolute twat?
On my bike safe course, the chap did say "be progressive so you have a clear view in front of you but don't be dangerous" which I translated as "get on with it". 😁