I lost my partner at the start of the week.
My SIL and her husband and DD are my support bubble, so I've been there. We may have bent the rules a little by deeming ourselves to be one household so we are the support bubble for dear MIL, who has just lost her only son.
However, I have also had contact with my stepson. DP and I weren't married, so DSS is legally DP's next of kin. He has been to my house once, and we took all the precautions we possibly could, wiped every surface he touched and made sure to sit at opposite sides of the room. But that's the only breach.
I would dearly love to have a friend to stay, the nights are the worst time for grieving alone, but I wouldn't risk it. I haven't been out apart from one supermarket trip and to my "bubble".
The socially distanced, number restricted funeral is going to be grim, but we'll do something out of doors when we scatter the ashes, which we'll leave till the spring, when hopefully we have a chance of decent weather and with a bit of luck there'll be some sort of easing of restrictions.