We looked at Haven cos they were quite cheap but tent wouldn't fit on their 6m x 6m standard pitch so it limits which parks we can go to
I would check with the individual sites Crafty. We've been to a few Haven sites with our big tent (5m x 7.5m) and they have always been really welcoming and had plenty of space. Saying that, we don't usually go there at the height of the august holidays when they may be a little stricter.
