The feature-length special is based on the true story of when a young Roald Dahl met his hero, Beatrix Potter.
Producers explain: "With Beatrix (Dawn French) coming to the end of her career and Roald aged only six and having recently lost his father and sister, this meeting of two literary legends was to have an enormous impact on the lives of both writers."
This news was announced at a showcase in London, which also revealed a number of other new Sky comedies. The TV network is set to release 80 original comedy and drama titles across 2020, an increase of 25% from last year.
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