The marketing campaign will be running for 5 weeks, and it will feature Enid Blyton’s Secret Seven, a series of books published by Hodder Children’s Books. Kids will be able to download one of 6 short stories from the series, and two additional titles will also be available to parents and children through a £1 book voucher redeemable at Kobo, Eason, or WHSmith. None of the 6 titles have been available separately before, but they have been previously published as a collection.
McDonalds has bundled books into their kid's meals for several decades now, and they have also been running similar ebook bundling efforts for a couple years now. This is at least the 4th such marketing campaign that I have heard of; similar programs have been run in the US, Germany, and Portugal. There was also at least one earlier campaign in the UK as well.