Mizter T wrote:

Absurdly, these issues still confuse me, and seemingly many others,
despite the fact they come up at least every month! One feels an FAQ
would be helpful - I'd happily compile one but for the fact that half
my answers would be wrong!

I totally agree - and, clearly, many of the staff trying to enforce the
regulations are as confused as the travelling public! It seems to be a
lottery whether you get challenged or not (and whether that challenge is
correct or not).