I can safely say I was the only person that wore a mask when everyone was seated. The door men did ask when we walked through the main doors.
There were some people wearing masks inside. I saw a few myself and I wore one. You may safely say you were the only one, but I guarantee you weren't.
I stayed for the whole show, got given a ticket by a friend and went for the sh*ts and gigs. Shame about the sound quality sitting at the back. The encore bit was actually good, I did like the message. Roundhouse is usually amazing for acoustics. People talking and getting wasted throughout the show was annoying; I don't understand why people go to see something, and then talk the whole way through it - go and sit in a pub LOL!
Thing is, plenty of people have had their second jabs, and if we're being told by venues and the government we don't
have to wear masks constantly, a lot of people aren't going to wear them. Plenty of people didn't have masks on, but it's a bit hard to wear one while drinking / eating snacks throughout the show.