See-Saw leaders lay out post-Mediawan plan built on Tenzing and Slow Horses

The company behind Slow Horses and Heartstopper wants its stories to live on across films, series and more.

Founders Iain Canning and Emile Sherman laid out that plan with joint managing director Simon Gillis in east London, in their first major interview since French studio Mediawan took control in March 2025, according to Variety.

See-Saw Films was founded in 2008 by Canning and Sherman and now works from London and Sydney. The Oscar-winning outfit sold a 51% majority stake to Mediawan last year, a deal reported by several trades in March 2025, with Mediawan, the French production and distribution organisation led by Pierre-Antoine Capton, as the new controlling owner.

Sherman said selling part of the company felt scary because See-Saw had never done it before. He said Mediawan had since fuelled and expanded the team's ambition across formats.

That ambition is clearest in Tenzing, the Everest film made for Apple TV. Directed by Jennifer Peedon, director of Sherpa, it tells the 1953 first ascent through the eyes of Tenzing Norgay alongside Edmund Hillary.

Tibetan actor Gendan Phuntsok plays Norgay and Tom Hiddleston plays Hillary. The film was shot in Nepal and New Zealand and will arrive on Apple TV after a short run in cinemas.

Company leaders called it their most challenging project to date. The scale was huge. Sherman described it as an insane production to make.

See-Saw also plans to turn The NeverEnding Story, adapted from Michael Ende's bestselling novel, into a major franchise. Sherman said the business is in creating IP, meaning characters and stories a studio owns and can reuse, and the team wants the same world-building approach for established brands such as Slow Horses.

The Gary Oldman-led spy series has released its sixth season on Apple TV, with seasons seven and eight in production. That means more episodes are already on the way.

See-Saw and Miraculous Corp have also announced a live-action series of Miraculous: Tales of Ladybug & Cat Noir, as reported by Variety. Behind the camera, Helen Gregory stepped down after five years at See-Saw, with Ben Irving hired into the television team, as reported in September.

For viewers, this points to a busy run of releases rather than a single premiere. An Everest epic in cinemas then on streaming, more Slow Horses in the pipeline, plus family fantasy with new lives ahead.