Well, almost certainly good deals after xmas. It's funny how us desktop jockeys never get decent sales on components, but laptops are a whole other story... (Before someone points out I must have no idea what I'm talking about, just because I don't buy myself laptops doesn't mean I haven't frequently done it for other people)
That being said, I'm not hunting this year for anyone so I'm not really aware of what's about. Keep an eye on hotukdeals.com and do the occasional search is all I can say. I will keep my ear to the ground though.
Crucially, what do you want? When we created this thread, £350-450 represented the absolute minimum that had to be spent to get something that was at least partially unlike a giant steaming dog turd with a keyboard stuck on it. Things have progressed since then, and by paying attention to sales it's quite possible to get something rather nice for £450. Do you want the cheapest thing that will do the job without stinking up the sitting room (£300 on sale, easily), or do you have something in mind?
Edit: Size preferences are critical here. The cheapest things are 15.6" diagonal and bulky, but in recent times it's possible to get a proper laptop (not some Atom-powered heap of shit) in a smaller form factor at a reasonable price - see the 13" Thinkpad Edge for example, £380 to start and frequently on sale.