I'm in exactly the same position. My worry is, even if there's this move to both WFH and office, at some point 'office' is going to become an expense and be cut and then there's no choice. I am too cynical to believe that companies want to push WFH for good and nice warm fuzzy reasons.

Also I feel for the people who's work was supporting workers in, y'know, work. I no longer live there, but even a crappy day in London for me was brightened by the countless interactions with people, the guy in the magazine shop, a new hipster pop up cafe, the street vendors selling exciting new food. Will they work from home?