Comet have the Acer T180 on offer at the moment, in store only.
A tad under £400 gets you the Acer T180 base unit (AMD64 3800) & Exprex 17" TFT.
Processor: AMD Athlon 64 3800+
Optical drive: DVDRW, dual
Storage (hard drive): 160 GB
Memory (RAM): 1024 MB
Shared graphics: 256MB
Usb, firewire, LAN, onboard audio, and built in card reader
Windows Media Centre
Keyboard + mouse
A flyer in store advertised this deal.
Note: this was not on display.