I posted this a few weeks ago and then the offer ended, but got voted to 318 within a few hours.
Its now back on £1 for 250g of Cadbury drinking chocolate.
This is cheaper than the shops own brand nasty hot chocolate
It costs £1.89 at Asda, so definately a good offer.
There are plenty of Co-ops about - easy to get to.
Treat yourself while its cheap