Lisa,
There is a site at Meriden ( adult only ).We went to have a look at it some time ago and it looked ok.
see their web-site :-
www.somerswood.co.uk
Somers Wood Caravan & Camping Park,Somers Road,Meriden,CV7 7PL
Tel no.01676 522978
If you are a CC member have you thought about Chapel Lane,Wythall? Most of the exhibitors seem to use that site as the NEC is only 9 miles away. ( Page 52 of the Club Book )
We stopped at Hollyfast site once only and were forced to go onto a pitch which was too tight and were refused permission to move even though we were almost the only ones on site.Would not choose to use that one again.