I found these at a local Currys so will probably be available at PC World as well.
The Archos TV+ (250Gb) is avaliable at £49.97, reduced from £244.66 !!! There were also the 80Gb version of this which was £34.97.
It seems like a lovely bit of kit and comes retail packed with a pretty nifty remote. At this price it's worth it just for the hard drive and enclosure let alone all else it can do !!http://www.archos.com/products/gen_5/archos_tv/features.html?country=au&lang=en