We camped late September last year in the van, no ehu, no heater, no mad insulation as I've just done it, no thermal screen cover and no thermal blinds.Shouldn’t be too bad at Sibbertoft in July, I’ll have the kids with me and that’s. all I was thinking about
It was fine in a sleeping bag in the van, me, Mrs and a baby. We don't have a pop top though which makes a big difference.
I can't imagine you having an issue in July, we'll be there too btw so we can say hello