The 1803 is going for £169 at Hi-Fi confidential. If you get their Phone No. from http://www.hificonfidential.com and tell you you've seen their advert in What Hi-Fi they'll honour the price, as I don't think it's on their website.
However, somebody said in the Amplifiers forum that they didn't have any stock, and it's unlikely that they'll get anymore since the 1804 will soon be released...