We went to the Welcome Family Holiday Park in Dawlish Warren, South Devon last year (near Exeter and the mouth of the river Exe), web site here
http://www.welcomefamily.co.uk/
I am rather particular where we stay, and I have to say this was a lovely camp, very tidy, well kept, and well run. It is ideal for families, and the evening entertainment was excellent.
A short walk to the beach (where there is a small fun fair and other amusments), and the trains run right along the coast and Dawlish Warren station is right by the beach (if you fancy a trip by train either way up the coast)
A few shops nearby (that are not too expensive) plus a couple of pubs.
Reviews here
http://www.realholida...Holidays_Dawlish.html
http://www.bview.co.u...y-Holiday-Park-in-EX7
There were more reviews on the tripadvisor web site last year but they seem to have had a clear out so there is only 4 (which are variable). The reviews last year were all mostly excellent (which is why we went).