I saw this in Tesco at Clitheroe yesterday on promotion, not sure when it ends. As it was the weekend I thought I'd stock up, and it's Buy One Get One Free (BOGOF). Double Club Card Point as well. Bonus!!!!
I'm not sure if this is nationwide or online, but would imagine so as it was between deli counter and the start of the special offers section.
P.S Remember Play Safe!