Would be very keen to know this aswell (around NW london aswell!)
https://www.cyclingtimetrials.org.uk/find-a-course?distance=0&district=0&zoom=6&cenlat=54.239551&cenlng=-4.394531
Then search for events based on the course code you want to ride.
Cheers!
@onyerbike started
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Would be very keen to know this aswell (around NW london aswell!)