Well, we managed to escape the room and solve the case and I'm now back at home and will share the experience with you.
The photos in this post have nothing to do with the Escape Room experience. They are some of the Magna Carta Barons currently on display in the city - I wasn't following the trail but photographed the ones I passed on my way to the meeting point.
I can't tell you anything specific about the puzzles we had to solve as that could possibly spoil it for some of my friends who I know want to do it themselves. So I'll just natter on and keep it fairly general, without giving anything away.
I think it's okay to say that it wasn't just one room but a series of rooms, each with a locked door. There were numerous puzzles in each room which had to be solved, some easy and some more demanding ... but not impossible.
It really was a Crystal Maze sort of experience with a couple of physical tasks, simple(ish) puzzles and plenty of logic problems.
We didn't manage to open the final door in the allotted 60 minutes but we'd got to the final door and we were still trying to find the code for the last lock when our time was up. In the end we took 66 minutes to complete it all.
It was a brilliant afternoon. They will be changing the theme in October so we are going to return for the new one, probably in November and we're also going to try the Bath Escape rooms and their detective tours. Apparently, these escape games are very popular on the continent and are just starting to gain popularity in this country.
We'll definitely be going again ... we're hooked!