As far as I am aware, it was shown nationally.
It was called 'Danger on the Beach' and is on Wednesdays at 7pm BBC 1. We watched it here up in N.Yorkshire and thoroughly enjoyed it. Recommend viewing for all.
I can only echo coleys synopsis of the programme.
Fine bunch of blokes. I will be watching next week.
and that goes for the lifeboat crew and beach lifeguards aswell, (one of whom has the same [full] name as my son!)
edit;
Also a reminder, that the person who overtakes you in a rush may not be a boy racer, but could be a volunteer lifeboat person.