As above. I don't actually know and it occurred to me that I also have no process for figuring it out? What do we think?
In terms of force, I actually know the maximum negative g-force reading for a number of UK coasters, from various sources. I’ll list them in rough order; here’s the top 5 (well, the only 5 I can think of off the top of my head):Straight in with the annoying "question as an answer" - do you mean most as in most force, or most as in most number of seconds?
Also have no idea, but will muse over the UK creds this evening and see which ones jump out.