Just got back from my local store (Telford) and Bells 1l and Smirnoff 1l are £10 each!
Checked online and its still £15 (on rollback) on there.
The guy instore said it should be nationwide.
*EDIT* Gordons is also on the offer.
Also on the display was Baileys and Bacardi so I wouldnt be suprised if they went on the offer aswell.