Seems like a bargain – I was looking for a tent which isn't going to leak in normal use (which for me means festivals, mostly) and is big enough for 2/3 people, with a built-in groundsheet and preferably big enough to stand up in. This fulfils those criteria, and has a sizeable living space as well as the sleeping area. From the reviews I've read it also seems like it's easy to put up and take down.
I saw this tent posted on HUKD through an ebay seller at £70.98 including delivery, and was tempted. But I checked Amazon and discovered that it's a tenner cheaper there, so I ordered one last night. Note: Amazon have dropped their price by a couple of quid since I posted this, so I updated the price.