If anyone is looking for an electric cooler box Halfords have got 30% off the price of them at the mo, although i don't know how long the offer is on for.
We have just bought a 40ltr one for £85 instead of £125, it only actually cost us £65 cos we had vouchers for £20 that we had had for ages. It plugs into your car or it plugs into the electric when you are using ehu.
We have had a cooler box from halfords for about 10 years before it has started to give up the ghost, so we thought we would buy from halfords again.