[4][5] In May, Sam Riley, Eddie Marsan, Simon Russell Beale and Erin Doherty were among the additional cast announced for the film.

[9] FilmNation Entertainment sold the film to STXinternational for the United Kingdom and to Sony Pictures Worldwide Acquisitions for multiple markets including Germany and Asia excluding Japan and independent distributors elsewhere.

Amazon Prime Video was rumoured to have been in negotiations to acquire UK rights from STX, but it was later revealed the deal had already taken place in 2022.

[1] In December 2023, Roadside Attractions and Vertical Entertainment acquired US distribution rights to the film, scheduling it for a cinema release on 14 June 2024.

The website's consensus reads: "Divorced from the historical record with little to show for it, Firebrand is a period piece whose revisionist aims are at odds with its stultifying approach.