Actually, let's respond on a point by point basis.
1) It's a bit more complicated than this, but simply calling someone a cunt won't get you arrested.

2) They could sue you, but they'd never win. This bollocks has been doing the rounds for ages. You have no responsibility to trespassers, unless you do something deliberately designed to cause harm. Think Home Alone.

3) Someone put it much better than I did. If you're acting suspiciously and then decide to escape a police questioning by running during a heightened state of alert due to terrorism, then more fool you.

4) I sincerely doubt that it's exclusive to the UK, and the way you described it is just sensationalism at its best.

5) Because I know you wanted to write it but opted not to: - The age of consent is fine as it is and should not be lowered to match France. The fact that you have to go on weekend breaks to get your way is irrelevant and a bit creepy.

6) The alternative? According to your list, I can see four that would suit you down to the ground as long as you're willing to learn the lingo. Although the nonce-punch may not be a valid defence to criminal proceedings in those countries.
( Muns, Mon 7 Oct 2013, 16:28, 1 reply)

Isn't being sweary and offensive in public an offense, then?

( drimble he'd been white, he'd been black, Mon 7 Oct 2013, 16:38, closed)

It all depends how you go about it.
If you use a megaphone, shout it repeatedly or cause some other form of public nuisance, then it will be.

If you do it quietly to someone and if nothing else comes of it, then fine. If it leads to something else, such as a fight, then it would be affray, although you instigating it by calling someone a cunt would be frowned upon.
( Muns, Mon 7 Oct 2013, 16:46, closed)

Is Brutus v. Cozens still law?

( .Yeti. El amor en los tiempos del cólera, Mon 7 Oct 2013, 16:48, closed)

Fuck knows.
I only deal with civil litigation, and I deal with it quite badly at that. The only precedent I know and ever refer to is Arkell -v- Pressdram.
( Muns, Mon 7 Oct 2013, 16:52, closed)

Arkell v Pressdram is a landmark case.
The correspondence received in connection with it should be cited in every single courtroom, all the time.
( Enzyme is powered by sunlight, Mon 7 Oct 2013, 19:50, closed)

For any fuckwits who don't know Arkell v Pressdram:
The nature of my reply is as follows: fuck off.

en.wikipedia.org/wiki/Recurring_in-jokes_in_Private_Eye
(RabidRodent I'm the person your mother warned you about, Mon 7 Oct 2013, 20:20, closed)