I just had to buy a cable for my camera and at the checkout it added the £4.00 delivery then took it off again.
I finished paying for that, then tried their most expensive plasma. It added the £35.00 delivery and once again took if off. so im guessing it covers all standard delivery charges.
Expires end of april and there are some cool bargains on there. Its not saving a lot of money, but its better off in your bank than theirs.