We have just bought a ‘Vango Icarus 500 Deluxe Family Tent, which is a 5 person tent. They are currently selling for £229.00 on Go Outdoors.
There is a sleeping compartment meant for 3 people but probably only suitable for 2 adults. The other sleeping compartment would be fine for 2 children.
We will be using this for the first time on Friday. However, based on a garden trial run it seems ideal for us as it has decent living space but is not so big that it takes 2 hours to put up and take down.
If the weekend is a disaster I will sell it to you for a decent price :).