Things cyclists should know … POV driver who's incapable of cycling

You still have an expectation that you must overtake, simply because they are cyclists, not something you seem to do with drivers.
Do not overtake until it is safe.
A 60 mph road should only be driven at 60 mph when safe, it is not a target.
If it is difficult to overtake, therefore unsafe, don't do it. How hard is that to understand?

This.
Not that I'm having a go at Mrs EL but drivers in general. I always give the example of a JCB going along at 12mph with a 17 stone Irish bloke at the steering wheel. Why do drivers not get out out and start giving it the large to this vehicle and it's user?

Though I've ridden with enough riders that come across as selfish by sitting in the middle of a lane that actively block faster moving vehicles from passing without reason and just bring tension.