Britain's X Files: Story, Cast and Series Facts

Story and premise

Deep beneath the streets of London sit thousands of highly classified and previously top-secret government files which disclose the details of extensive military, spy agency and police investigations into the paranormal.

With hundreds of hours dedicated to examining these formerly off-limits documents from the National Archives, investigative journalist Tim Tate reveals just how far authorities on both sides of the Atlantic were willing to go to venture into the unknown.

Combining his findings with expert insight from Dr David Clarke, Britain's X-Files fact-checks out-of-this-world phenomena with cases including the legend of the Flying Dutchman, Harry Grindell Matthews and his Death Ray, the Beast of Bodmin, Uri Geller, the Comet plane catastrophes, premonitions on the Aberfan disaster and more.

Series details

• Title: Britain's X Files
• Format: Documentary
• Language: English
• Genres: Mystery, History
• Premiere date: 2026-02-24
• Status in TVmaze: Running
• Network listed by TVmaze: Sky History
• Network country: United Kingdom
• Typical episode runtime: 60 minutes
• TVMaze ID: 90508
• IMDb ID: tt40826376
• TVDB ID: 474555

Seasons in the TVmaze catalogue

• Season 1: premiered 2026-02-24; final listed air date 2026-03-31; episode order: 6.

Source and licence

Adapted from Britain's X Files on TVmaze. The synopsis is reproduced as plain text; catalogue facts, cast and season records are selected and reformatted. This adapted text is available under CC BY-SA 4.0, following the TVmaze API licence. Network and web-channel credits identify the service listed in this source; they do not establish current streaming availability.