My firm is very keen to get everyone back in the office, despite the fact the office is very small and cramped, so can't possibly be Covid-safe (they had a sickness bug go through the office the other week and apparently there is no hand sanitiser at the entrance).
I've not had to go back as those of us with kids were allowed to stay WFH until 7 Sept, but they expect everybody back there on that date.
However, during lockdown I've found myself a new job with a firm that's realised during lockdown that they can employ people from anywhere round the U.K., so I'll permanently WFH for them, with the odd trip to the office 170 miles away (conveniently in the town where my parents / family live).
Due to the fact I'm leaving, I've negotiated with my current firm to WFH until my leaving date at the beginning of October.
I already have a friend at the new place, who poached me, and I've also poached a colleague who doesn't want to go back to the office either and leaves a couple of weeks after me (he has also negotiated staying WFH until he leaves).
It suits me to WFH, I like getting up a bit later, I'll be able to take the kids to school and I took my lunch anyway, so Pret etc won't be missing me!
I know it doesn't suit everybody, and if people want to go back to the office, even if they also WFH more now, then that's fine by me. But I'm glad I don't have to do it anymore.