Dell 2005fpw £304.33 inc vat
Dell 2405fpw £586.33 inc vat
Free delivery too.
Here: http://www.europc.co.uk/pages/filter.aspx?q=2405fpw
Not as cheap as autdirect, but they say they have 20 available (at time of posting). They're refurbished of course.
Edit: oops, meant to post this in the bargains forum.