We have been to Home Farm, Bircher quite a few times - really clean site with lovely showers / kitchen & nice views - nothing actually on site, but Crift Castle (NT) is 5 mins down the road and they have a fab playground for the kids and often have activities going on.
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.