somebol thanks for the Warwick Castle details, was looking forward to this!
Once upon a time in the 1980s I was there and as a yank was "concerned" when I emerged at the top of a tower and the door from the stairs auto-closed with a loud "thump". Turning around at the noise I was dismayed to see a door with no handle and a sign "No Way Down". Makes sense to Brits but for a moment I thought I would have to climb down lol! Thankfully there was a separate down-only stairwell