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Gary Haggarty

b. 1973

Former leader of an Ulster Volunteer Force unit and supergrass

Informant
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About Gary Haggarty

Born 1973. Gary Haggarty is an informant.

Gary Haggarty (born ) is a former leader of an Ulster Volunteer Force unit in the Mount Vernon area of north Belfast and police "supergrass". In January 2018 he was sentenced to more than six years in jail after admitting to over 200 offences, including committing five murders.

In May 2018, Haggarty was released from prison and has been put into a witness protection programme.

In 2023 he testified at the trial of Loyalist James Stewart Smyth, who was accused of murdering two Catholic workers in 1994. Haggarty told the court that Smyth and Mark Haddock had plotted the murders and that he had supplied Smyth with the weapons used to kill the two men. During the incident, approximately 32 bullets (a full magazine) was fired from a Sten sub machine gun into a parked car with three men inside eating their lunch. Afterwards, a man dressed in dark clothing (allegedly James Smyth) was then seen running from the scene via a nearby children's playground. James Smyth was found not guilty of all charges in February 2024, with the judge highlighting inconsistencies between Haggarty's evidence and that of other witnesses.

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Important facts

Born
1973
Birth century
Occupation
Informant
Also known as
Cowhead

People in Gary Haggarty's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Gary Haggarty's

Frequently asked questions

Who is Gary Haggarty?

former leader of an Ulster Volunteer Force unit and supergrass

When was Gary Haggarty born?

Gary Haggarty was born in 1973.

What is Gary Haggarty's occupation?

Gary Haggarty is an informant.

Sources & further reading

· Wikipedia: Gary Haggarty

· Wikidata: Q47515056

· DBpedia: Gary Haggarty

Cite this page

APA: Biography.guide. (2026). Gary Haggarty. https://biography.guide/gary-haggarty/

MLA: "Gary Haggarty." Biography.guide, https://biography.guide/gary-haggarty/.

Chicago: "Gary Haggarty." Biography.guide. https://biography.guide/gary-haggarty/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

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