Hi David
The two CC sites that I know of are Hillhead in Brixham, we are staying there from the 28th December (couldn't persuade hubby to be away for Christmas. We are spending New Year there and they put on entertainment and food etc.
I also know Seacroft in Cromer is open over Christmas, but I think these sites get booked up extremely quickly. Broadway is another CC site which is also open over christmas and it is lovely.