The rise of drone enabled crime presents one of the most immediate and significant security challenges facing the modern prison estate. Drones are now used on a weekly basis to deliver drugs, weapons, mobile phones and other contraband into prisons across the UK, with clear evidence that this activity fuels violence, debt, coercion and organised crime networks inside custody. The scale and persistence of the issue has reached what many describe as epidemic levels .

For the Ministry of Justice, the question is no longer whether drones pose a threat but how the estate can detect, deter and prevent these incursions in a way that is safe, proportionate and operationally deliverable.

A maturing legal framework

The UK has already laid the foundations for the use of counter drone technology in custodial environments through the Prisons Interference with Wireless Telegraphy Act. The Guernsey Prison deployment of SkyFence demonstrated that legislation can be adapted to enable controlled mitigation of small unmanned aircraft within a prison perimeter, with local authorities extending the Act to include drone focused provisions where required .

This approach provides a clear indication of how the legislative environment could evolve to support wider adoption of counter drone systems across the UK estate, subject to appropriate governance and safeguards.

A new generation of compliant and evidence based detection systems

Drone Defence has supported UK Government departments, police forces and prison partners for more than a decade and has developed a full suite of compliant and operationally mature detection technologies, including:

• AeroSentry Zero for verified ADS B and remote identification data to provide accurate three dimensional positioning of drones and controllers up to five kilometres away .

• AeroSense, a lightweight radar system designed specifically for small unmanned aircraft detection, establishing tracks within one second and delivering dependable performance in complex sites such as prisons .

• AeroEye, an artificial intelligence enabled optical system that provides visual confirmation and evidential quality imagery to support prosecutions and intelligence activity .

All data feeds into the AeroTracker command platform which gives prison security teams a single operational picture, automatic alerts, historical flight logs and the ability to track trends, launch points and patterns of criminal behaviour.

This level of airspace awareness enables a shift from reactive incident response to intelligence led prevention.

Proven mitigation capability

Detection alone will not stop contraband reaching the wings. The SkyFence system at Guernsey Prison remains the world first fully automatic drone mitigation installation in a custodial environment. When a drone enters the warning zone, radio frequency sensors activate an electronic barrier that prevents the aircraft from entering protected airspace. The drone either lands or returns to its point of origin with no risk to people or infrastructure, offering a safe and proportionate response to unauthorised flight .

The system was designed with operational, legal and technological safeguards in place, demonstrating that mitigation can be delivered in a compliant and tightly controlled manner.

Alignment with MOJ priorities

Modern counter drone systems directly support several key MOJ objectives:

Reducing violence and organised crime

Drone delivered contraband drives drug markets, weapon distribution and the consolidation of gang influence within prisons. Early detection and reliable mitigation reduce these drivers at source.

Strengthening safety and stability

Improved airspace awareness gives staff the confidence to intervene early, manage risks proactively and create a safer environment for officers and prisoners.

Improving intelligence capability

Tools such as AeroTracker allow prisons to identify patterns of activity, correlate drone flights with internal incidents and support law enforcement investigations outside the perimeter.

Supporting reform and rehabilitation

Reducing the availability of illicit substances and mobile phones helps maintain order and reduces the conditions in which coercion and exploitation flourish.

A clear operational pathway

The maturity of modern detection and mitigation systems means that prisons can now adopt scalable and proportionate solutions, from low level remote identification monitoring to full perimeter protection. With portable systems such as AeroSentry Patrol also available for intelligence gathering around suspected launch sites, governors can tailor capability to local risk profiles and estate layouts .

The low level airspace above UK prisons is no longer an uncontested space. As drones evolve and criminal networks become more capable, reliable detection and controlled mitigation are essential tools for protecting staff, reducing crime and supporting safer outcomes for prisoners.

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The opportunity now exists for the Ministry of Justice to build on proven projects, established legal foundations and mature technology to create a consistent, national approach to prison airspace security.

Interested in finding out more?
Get in touch with us today – info@dronedefence.co.uk | +44 (0) 843 289 2805