Just to mention that Decathlon have a sale on and their Quechua Seconds 4.2 family pop up tent (4 berth) in a beige colour is reduced from £199.99 to £119.99.
Pop in a Coleman carpet £29 off Amazon and you've got a great weekender.
The old style Family 4.2XL is on offer at the moment, as well. They're not very tall though (175cm). I think it's why they didn't sell very well. Even the previous model (pagoda style) family pop up was 185cm tall in the living area.
The latest style Family 4.2 (and 4.2XL) which don't seem to be on the Decathlon website at the moment (which is odd, as they were there a few days ago!) is quite a bit taller, at 205cm in the living area, I believe.
A decent tent for the money, though, if you're not bothered about the low headroom.