Buy One, Get One Free on these mini libraries.
A great stocking filler for young children. Can't remember them all but I bought Peppa Pig Fairy Tale and the Eric Carle (The Very Hungry Caterpillar) Little Learning Library. In The Night Garden and Ben And Holly's Little Kingdom were other options.
3 1/2 inch square books, ideal for little hands. Someone on Amazon recommended splitting them up for party bags, which is a good idea.
I'll go back to Tesco later and tell you the other titles, sneak a photo :-) In the meantime, I've added some pictures further down.