You may remember that just last week the whole world went a bit bonkers when John Lewis released their Christmas advert featuring a lonely man on the moon.

Well, Sainsbury's have upped the ante with the release of their Christmas advert featuring a beloved cat called Judith Kerr’s Mog. A new Mog book will be sold solely in Sainsbury's and the campaign will raise funds to children’s literacy with Save the Children.

We'll leave the final decision with you.