The Warner Bros. prequel movie has added a healthy dose of box office talent to ensure we go see the upcoming musical.

Olivia Colman and Rowan Atkinson will be joining the cast of Timothée Chalamet's 'Wonka' origin story, which will see the bonkers children's character traverse the world discovering - what we presume - will be interesting chocolate recipes and ideas.

Two-time Oscar-winner Sally Hawkins will also be joining the cast, as well as Keegan-Michael Key, Matt Lucas, Mathew Baynton, Jim Carter, Tom Davis, Farnaby, Rich Fulcher, Kobna Holdbrook-Smith, Paterson Joseph, Calah Lane, Colin O'Brien, Natasha Rothwell, Rakhee Thakrar and Ellie White.

The 'Wonka' musical was announced earlier this year in May, casting 'Dune' and 'Call Me By Your Name' star Chalamet in the lead role as the madcap chocolate and confectionary creator. The movie comes from 'Paddington' and 'Paddington 2' director Paul King.

Set to take place before the events of Roald Dahl's book 'Charlie and the Chocolate Factory',  the studio describes the musical as the: "Vivid, mythical beginnings of the imaginative young inventor before he becomes the renowned scrumdiddlyumptious Mozart of chocolate."

Principal photography is set to begin within the next week in London. Rather interestingly, Northern Irish singer/songwriter Neil Hannon of The Devine Comedy will be writing original songs for the film.

Last week, it was announced that Netflix had bought the rights to Roald Dahl's entire works. 'Wonka', however, is being produced by Warner Bros., and has been in development for quite some time. So, the chances of this movie heading to Netflix in the future are quite slim, and more than likely it will be streaming on HBO Max after its theatrical run.

Settle in for a long wait to see Olivia Colman and Rowan Atkinson et al in 'Wonka', as the musical won't be released until March 17, 2023.