Walton-on-the Naze & Bournemouth undercliffe drive I used to park overnight & swim (but not since they turned it into pay-as-you-enter a car park many years ago), Gt Yarmouth was nice too, & Leiston was very quiet. Lulworth cove is interesting, but parking is severely restricted & cost a fortune. Perranporth was a good sandy beach with several coves. Scottish beaches are truly beautiful, but bit too rocky, cold & windy. Been to most UK coastline, but Dingle & W Cork in Ireland are nice too.