Pixmania.co.uk has this popular Canon Digital Ixus 55 camera for £171.50. This tops the best seller list in their camera section.
By using £10 discount code * camerabuyer0506 * the price is lowered to £161.60. Go through Quidco for 3% cashback. If you have a PIXcard, you get free delivery and a possible further discount. This is the cheapest price I could find for this model anywhere inc delivery.
Specification from Canon site:
The compact Digital IXUS 55 epitomises stylish performance. A giant screen and exquisitely finished exterior conceal the very latest image processing technology for results that demand to be seen.
Stylish and slender 5.0 MP CCD, 3x optical zoom with UA lens, DIGIC II and iSAPS, 2.5" LCD with wide viewing angle, 15 shooting modes, VGA movies at 30 fps, PictBridge and Print/Share button, USB 2.0 Hi-Speed, Software and CANON iMAGE GATEWAY