This is what we found on Wikipedia regarding the Roald Dahl's Charlie and the Chocolate Factory (Touring):

Charlie and the Chocolate Factory is a 1964 children's novel by British author Roald Dahl. The story features the adventures of young Charlie Bucket inside the chocolate factory of eccentric chocolatier Willy Wonka.

The story was originally inspired by Roald Dahl's experience of chocolate companies during his schooldays at Repton School in Derbyshire. Cadbury would often send test packages to the schoolchildren in exchange for their opinions on the new products. At that time (around the 1920s), Cadbury and Rowntree's were England's two largest chocolate makers and they each often tried to steal trade secrets by sending spies, posing as employees, into the other's factory—inspiring Dahl's idea for the recipe-thieving spies (such as Wonka's rival Slugworth) depicted in the book. Because of this, both companies became highly protective of their chocolate-making processes. It was a combination of this secrecy and the elaborate, often gigantic, machines in the factory that inspired Dahl to write the story.

Charlie and the Chocolate Factory is frequently ranked among the most popular works in children's literature. In 2012, Charlie Bucket brandishing a Golden Ticket appeared in a Royal Mail first class stamp in the UK. The novel was first published in the U.S. by Alfred A. Knopf, Inc. in 1964 and in the U.K. by George Allen & Unwin 11 months later. The book's sequel, Charlie and the Great Glass Elevator, was written by Dahl in 1971 and published in 1972. Dahl had also planned to write a third book in the series but never finished it.

The book has also been adapted into two major motion pictures: Willy Wonka & the Chocolate Factory in 1971 and Charlie and the Chocolate Factory in 2005. A stand-alone film exploring Willy Wonka's origins titled Wonka was released in 2023. The book has spawned a media franchise with multiple video games, theatrical productions and merchandise.