I am retired, I live in North Somerset and I have been a keen road cyclist for the past 10 or 12 years, prior to that I rode mostly MTB's starting in the late 1980's. I have had a full motorcycle licence since 1976.
Because I am retired I always try to let drivers pass easily, whether they are approaching or passing me, especially on the Somerset single track country roads I spend a lot of my time on. I am especially aware of working drivers as they are trying to make a living while I am just trying to stay fit. By working drivers, I mean van drivers, lorries, tractors, anyone who is clearly at work when I am at play.
By way of thanks for my pulling over I sometimes get a friendly beep, or a flash of the hazard lights, a wave from an approaching vehicle, or a passing 'school run mum', all of these give an indication that I have shown some thought for the drivers situation and that they appreciate that, much like a wave you might give someone who has waited for you in a passing place, say in the Highlands of Scotland (where I also cycle).
However, I am more often ignored than thanked, I have also had abuse shouted, the bird and V's given, I have had a bottle of water thrown in my face after I had waited in a passing place for two flat bed trucks that were heading towards, me and I have also been hit from behind, also while stationary in the first passing place available on a little used causeway on the Somerset levels. The driver had pulled off the road towards me in order to shout at me for holding him up, except he had not been following me directly, there was another car in front of him, regardless I had pulled into the first available passing place but that still was not good enough.
There are two sides to every tale and being 11 stone of meat, threatened by several tonnes of metal combined with ignorance of the law and an overriding sense of entitlement is sometimes a scary and frustrating place to be.
On the law. The Highways Act say that you MUST give vulnerable road users i.e pedestrians, horse riders, cyclist and others a minimum of 1.5m space when overtaking.
All of that said, I have NEVER, when cycling had a single issue with a (fellow) motorcyclist.