Thanks everyone, lots of good ideas here, this forum is great!
Cool breeze - I realise I was looking at the Illusion 800XL which was about £1,600. We are a family of 5 so think we need a bit more bedroom space. I know the 500 says it's a 5 person tent but I think it would be a bit of a squash! Especially with growing children 😀
I wish more tents had the clips for the extra inner bedroom - just gives more flexibility.