Surely people are making this a touch too complicated. The government have advised we should take one form of exercise each day.
It's clear everyone is expected to act responsibly. For walkers, for example, of which I am one, this means not pulling on boots, rucksack etc. and heading off across the moors. For cyclists, especially those who, like me, ride longer distances this means cutting back. I feel 30/35 miles, two hours or so is a reasonable response. People who generally ride for 1-2 hours can carry on as normal.
There are no rules, regulations etc. as far as I can understand, just a firm request people act sensibly and responsibly.
As for being approached by the police? Surely it's common decency to respond politely in the same manner as we expect to speak to and be spoken to by others.
It's very easy to wind up a situation with the police by responding in other ways. Is it worth it? Not to my mind.
There are no privileges or superior position or such nonsense as originally inferred. We ride bikes. That's all.