And the final run time is 151 minutes, so the “2h30m” talk that’s been going around wasn’t rounding up or down very much at all.
Hasn’t the runtime been known for a while? When I bought my tickets in early October it was listed as exactly that - 151 minutes.
All I ever saw/heard was “2 and a half hours,” which isn’t super specific (I’ve seen movies of 140m-160m called “2 and a half hours”). BBFC length listing is as accurate as you can get though (and since it’s not a listing for a DVD release, there’s no PAL speedup to account for).