London Overnight

You are briefed, shut in and given sixty minutes. The puzzles are physical and logical rather than knowledge-based, and a games master watches on camera and drops hints when you are stuck. Most rooms have a clear story and a timer on the wall. A whole stag group will not fit in one room, so you are split across two or three and race each other. That usually turns out better than everyone in one space shouting over each other. Nothing special to wear. Rooms are strict about drinking beforehand, so do it early in the day.

You meet the guide at a fixed point and move through a run of bars across the evening, usually four or five, finishing at a club. The guide knows the doors, so you skip the queue and the group is not turned away for being too large. Most crawls include a welcome drink or a shot at each stop, and entry to the final venue. The rest is on you. Groups from several bookings are often merged, which some stags like and some do not, so ask whether yours is private. Dress code is the club's, not the guide's. No trainers and no sportswear at the last venue, and matching shirts get refused at some doors.