Some time ago (https://www.pwsanders.uk/2024/04/29/five-adult-things/) we posted five things that adults could do in London without kiddies bothering them.
Here are five more:
Get a tattoo
Very popular right now, and there are so many great tattoo parlours with wonderful artists, too many to highlight any one.
But… you will be here for a limited time, booking will be needed, perhaps multiple sessions including planning, and aftercare, so something extreme eg Nelson’s Column on your back, as a souvenir may just not be practical.