12 Pack (600g) of Pop Tarts - Frosted Apple Blast in B & M Bargains in the Bolton store on manchester rd. I went to the Walkden store the same day and couldn't find any so likely just local.
Best before date of 11th December 2013 (note: this is not a 'use by' date so they are fine to eat). There were about 16 packs on the shelf when i went there at about 6:00pm 3rd Jan.
They are £2.68 in ASDA for an 8pk so this is a bargain.