Just been to Sainsburys this evening and bought a cross cut shredder. Reduced to half price £15.99. It also has seperate slots for C.D's and credit cards (staples and paper clips can be left on)
Tried it out and it's great, a big improvement on our old straight cut shredder. Well worth the money.

Our branch is Prescot Road Liverpool, but would imagine they are nationwide. The were located near the entrance, on the shelf ends, where they put reduced wine etc. Will sell fast at this price I am sure. HTH