A documentary about an ex-British army intelligence officer in Northern Ireland during the Troubles will premiere in Harrogate next week.

The Man Who Knew Too Much is billed as an "in-depth look at the smoke and mirrors world of intelligence, psychological warfare and fake news through the eyes of a man who stood proudly at the centre of that world".

Directed by Michael Oswald, It tells the story of Colin Wallace, who was a senior information officer in the British army.

Wallace worked in a psychological warfare and propaganda department in Northern Ireland called Information Policy. Its job was to spread fake news, scare people and smear politicians to divide and create conflict amongst communities.

After refusing to work in areas he believed undermined democracy he was accused of leaking classified documents and made to take voluntary redundancy.

He was later framed for murder and sentenced to 10 years in prison — although the sentence was quashed on appeal 15 years later after the Home Office coroner admitted his report had been influenced by a member of the intelligence community.

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