I wear gloves for any mechanical stuff and changing tyres. The only time I don't wear them when working on the bikes is for electrical stuff as it's too fiddly with gloves on.
https://tfl.gov.uk/modes/driving/ultra-low-emission-zone/motorcycles-mopeds-and-more
I know a mate of mine had to have something done to his 1991 Africa Twin to comply with the regs. He lives in Lewisham and was trapped with the bike if he didn't have it done.
I am Mr Gofer today . Ersilia and Paolo both have a cough and cold so after my trip to the doctors I did the shopping. I have just made them some breakfast but god help them if I have to make the dinner this evening