Can’t imagine its a problem at low levels in the UK. Just no reward to motivate it.
Don’t think its a concious problem in lowish level bridge either and there its so *easy* to ‘cheat’ you often end up having to actively avoid doing so…..
As for how to cheat ‘well’ – its sadly mostly fairly obvious if you put your mind to it
Firstly, of course, using a mobile phone/something else to parrot computer moves is simply unintelligent. It is horribly obvious and you *will* get detected, via the moves made if nothing else.
(FIDE have now got people assigned to doing precisely this, methods well proven in online chess.).
Even using a mobile phone a few times/game is going to get fairly obvious. Putting something identifiable as your mobile/headset in the bin in a toilet (see some recent case) is clearly absurdly risky.
Cheating intelligently? A real worry.
There is still one technically hard bit left – getting the moves out from the tournament to your ‘helper’. Its genuinely hard to think of a properly good way to do that.
(This is where that Bulgarian case was interesting, as the claim was he was getting computer moves back to him even at rapid play time limits. *How*?).
If you can get the position on a remote computer, its trouble. None of these actual moves, you’d aim at boosting someone’s performance by something like an on/off signal indicating the presence of a big tactic in the position.
Big strength boost which you’d never find that from the games Could make it so small you’d never pick it up on a search either.
The other thing is *when* you cheat. Pick some tournament with grading bands and good grading prizes and go for those. Profit