British Museum today - has removed ridiculous 1-way system and made entry easier. They "recommend" masks but don't enforce it. I didn't wear one, got no trouble even when I asked an attendant a question. Most, but not all of the museum is open.
Bannatyne's gym (at least my local one), of which I have complained bitterly here in the past, have now removed the mask edict. It's up to the individual whether they wear masks, check temperature, hand-sanitise etc.
From what I have seen during my three-weekly one hour visits the majority of people are opting to not wear masks.
Hooray!
Café chain Pret a Manger in London has removed everything (signs, 1-way system, etc), expanded seating, but kept the perspex counter screens. Some staff wear masks, most don't seem to. Optional for customers. Very good.