Tbf the rules in the UK about parks and things are different to Spain and Italy. Given how we are tracking them, things should perhaps be tightened up a bit, though.
I agree that today it felt like there were lots of people out and about, and more driving than usual.
However, when a lot of people are still being asked to go to work (because they can't work at home, even if there work isn't essential), it's hard to ask them to stay inside all the time during their time off. I think the rules on working need to be tightened up first.