Go to a comedy club
Seriously adults only, with usually lots of swearing (that’s what passes for comedy here nowadays).
We were going to suggest the Museum of Comedy in Holborn, but realise that’s not a club.
So many pubs have spaces for comedy nights, so we will just link to The Boat Show, as it’s on a boat.
Our original choice for rooftop bar closed in the few weeks between writing the entry and publishing it. If you intend to go somewhere, double check it still exists!!