An unannounced inspection at one of the UK’s largest prisons has revealed systemic security failures, with drone-borne drug deliveries contributing to a spike in inmate deaths and widespread destabilization.

HMP Parc, a privately operated facility in Bridgend, Wales, was the subject of a critical report following the deaths of 17 inmates in 2024, more than any other UK prison. Of those, at least five are believed to be drug-related. Inspectors described an “alarming” level of illicit substance availability, with drones identified as a key delivery method.

“We know drones can fly to specific cell windows and drop off packages very quickly,” said Charlie Taylor, HM Chief Inspector of Prisons. “Drugs are pouring into the prison.”

Drone drops have become an increasingly common tactic for smuggling contraband into UK prisons. In Parc’s case, 900 instances of drug discoveries were recorded this year alone. The report noted that new window designs aimed at curbing drone access had only recently begun to be installed, while enhanced gate screening facilities were still lacking.

Although operator G4S claims to have invested in patrol dogs and detection technology, the inspection found these measures had failed to stem the flow of synthetic opioids and other drugs into the prison. Nitazenes, an emerging class of potent synthetic opioids, were suspected in several of the deaths.

Parc, which houses around 1,700 inmates, has seen a dramatic decline in security standards since a change in leadership and a new management contract with G4S in 2022. The report noted that new interim leadership had “failed to grip” the scale of the problem, leading to what Mr. Taylor described as a “very traumatic time for everyone” at the facility.

Drones continue to pose a growing threat to prison security in the UK, with this latest case highlighting the challenge of maintaining control over airborne contraband deliveries and the consequences of failing to adequately prepare for the drone issue.

As drones become increasingly accessible, correctional facilities across the UK, and globally, are being urged to modernize their countermeasures and update infrastructure to prevent further erosion of prison safety.

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