Ladybird Books was a publisher of children's books. They started publishing in 1914. Their heydey was the 50s through to the 70s.
Before we get into the main series that was published in 1986, Ladybird released an adaptation of Transformers The Movie. It was adapted by John Grant. Rather than use artwork like the others, they used screen captures from the movie. It's a loose adaptation of the movie, with some changes. Such as Laserbeak being hidden inside the console which Ironhide sits at, at the start of the movie. Unicron is described as snow-capped in planet form. Deaths are also scaled back too. It was released under Ladybird's "Tell-A-Tale"line, with a cassette, narrated by Peter Marinker,
Thanks to RetroRobotRadio for uploading the cassette adaptation for people to listen to. The adaptation of the movie is actually a pretty good one, given it's done in 52 pages and it does skip over or shorten a lot of scenes.