I'm just going to chime in and say that the ones that are following the rules are the ones that are suffering. The idiots that are congregating at parks/parties are not suddenly going to mature or wisen up just because a rule changes. Things are just going to get tougher/worse before they get better.
Before the lockdown started I too thought it was OK to go out in the car for a drive (I didn't actually, but I was planning to) until I was reminded, as above, that it's not just about keeping a social distance. If you crash or break down, it's contact that otherwise wouldn't have been needed. The problem is the 'only go out for exercise' bit. People are flaunting this all over the place, even by going out for a walk, to then come back and decide it's time to walk the dog. Our neighbours have visitors every day and it's infuriating watching them do it, when I haven't been able to see anyone other than the same one person for 6 weeks now (I'm type 1 diabetic).
Even my 6 monthly annual review, which is very important for my health, has been cancelled. I have other issues that I want to see a doctor about but I feel like I can't make an appointment; a GP waiting room is the last place I want to be.