M4 police chase: Drug enforcer jailed for sawn-off shotgun rampage

A London man who travelled to South Wales to enforce a drug debt—mistakenly targeting an innocent stranger before leading police on a high-speed motorway pursuit—has been handed a substantial prison sentence.

Michael Dumbuya, 27 (DOB: 27.03.1998), of York Street, London, appeared at Cardiff Crown Court on Friday, 19 December, where he was sentenced to 14 years and 5 months in custody. The judge also imposed an extended licence period of four years, deeming him a significant danger to the public.

The court heard that in the early hours of 20 May 2025, Dumbuya travelled from the capital to a property in South Wales with the intention of collecting a drug debt. However, he entered the home of a man entirely unconnected to the dispute. The victim was dragged from his bed and subjected to a "prolonged" assault, sustaining repeated punches and kicks before the attacker fled the scene.

Following the assault, Gwent Police officers located Dumbuya's vehicle on the M4 near Caerleon. When signalled to stop, the defendant initiated a high-speed pursuit, driving recklessly for a considerable distance. The chase concluded at Junction 17, where Dumbuya’s vehicle collided with another motorist. He was observed climbing out of the driver's side window before being arrested by officers.

Upon searching the wreckage, police recovered a loaded sawn-off shotgun, a CO2-powered pistol, a balaclava, and gloves. Forensic evidence presented by the Crown Prosecution Service (CPS) confirmed the defendant’s DNA on the firearms and the victim's blood on his clothing.

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Dumbuya had previously pleaded guilty to possession of a firearm with intent to endanger life, possession of a firearm with intent to cause fear of violence, causing actual bodily harm, and dangerous driving.

In addition to his custodial term, Dumbuya was disqualified from driving for 15 years and 8 months and must pass an extended re-test before being allowed behind the wheel again.

Senior Crown Prosecutor Millie Davies stated that the defendant had "armed himself with dangerous weapons" and showed "no regard for the safety of others" during the motorway pursuit.