Photomap

See clip at youtu.be/0cb07jc6JY4

I'd planned a spot ahead where I'd be well over with plenty of space to pass, but this person driving has no patience at all. Notice also that there accelerate to avoid hitting the oncoming person cycling.

Passing to Close
Highway code rule 213.
Motorcyclists and cyclists may suddenly need to avoid uneven road surfaces and obstacles such as drain covers or oily, wet or icy patches on the road. Give them plenty of room and pay particular attention to any sudden change of direction they may have to make.
www.direct.gov.uk/en/TravelAndTransport/Highwaycode/DG_069858

And more importantly Highway code rule 163.
Overtake only when it is safe and legal to do so. You should give motorcyclists, cyclists and horse riders at least as much room as you would when overtaking a car.
www.direct.gov.uk/en/TravelAndTransport/Highwaycode/DG_070314