Good on you op and others doing similar. Once it was announced that nannies and cleaners could return to their jobs, it gave the message to make your own risk assessments.
We are allowed outside to have picnics, play tennis and whatever else.
Police wouldn't just walk up to them and give them a fine. Police have to prove they are breaking the social distancing rules. And even them over the weeks have said they are powerless.
But then I'm the shielded who is supposed to stay locked up until it's time to what, wait until it's safe? That's at least another 4 months. I've already served at least 2 months. What crime did I commit that deserves this? Is it now a crime to be born, because in a way that what it feels like.
When I was able to, based on my own risk assessment based on various factors. I went outside, and onto the street. I walked, I sat, I met some interesting people along the way, all socially distancing. I went home. And when I needed, I did it again and will continue to do so when I can.
If I had sat indoor all this time, I would have killed myself already.
I even spoke to local officers I've gotten to know over the years, same with omfg people from other households. And for some unknown reason, going out into that scary world keeps me from killing myself.
I am not alone. People who are shielded/unshielded/doesn't matter people are struggling mentally across the globe. The increase this would create with MH was talked about back in March? It still keeps propping up. One of the main reasons for this is not being able to go out.
And to make it even more baffling, I am also advised to get as much sun as possible, because my body has difficulty producing that stuff we need from the sun 
Or I could chat to my neighbours who are outside enjoying themselves, both our households could sit in our (invisible) gardens, spend the day chatting away. Could make a day of it, get the pools and sandpits out in both gardens.
But spend 20 minutes chatting to a couple of people elsehwere, and omg ruunnnn.