Another penalty for drink driving in the UK is that, even if you are able to get insured after your ban, for the next ten years the premium will be astronomical.

When my son passed his driving test I hammered home the point that, if he ever got caught driving under the influence, he could wave goodbye to driving again for a very long time as he wouldn't stand a chance of getting insurance. Luckily, he and his mates seem to have taken the message on board and when they go out they take it in turns to drive and not to drink.

I've also made him understand that, if he's been drinking the night before, he can still be over the limit the morning after.