Looking after my granddaughter during lockdown.

Yes

Definitely! The fresh air, sunshine and exercise will be good for both of you, in fact they're recommended.

Definitely OK

And if you wanted to, you could take her for a walk with a friend from another household as pre-school children don’t count as a person in their own right! So you would still be just two people meeting up, not three.

Yes, you are in love parents, and can take her out and also meet a friend with her as she is under 5

"...in loco parentis!!!!..." serves me right for all going all fancy phrases!! ?

I rather like in love parents, Madgran77!

Nonnapg my childminder colleague and I have been for a long ramble through the local nature reserve and woods with three under 3s today.
So many sticks to pick up and try for size!
So many dogwalkers and their dogs to meet and talk to.
The children had a lovely time and we'll all sleep well tonight ?

Yes - make the most of it as fresh air is recommended. We have been to ponds, jumping in muddy puddles, making tunnels under fir trees, scooting, throwing stones in burns. DGS2 was 2 just before 1st lockdown. I actually enjoyed it as there was no pressure and could go at his pace. We wandered all over the place - parks were shut which they aren't this time.

Of course you can bob it’ll be good for both of you. Especially whilst the weather is so good.