In 2025, a drone over Windsor Great Park led to the arrest of two men during a high-profile state visit. The incident illustrates how seriously UK authorities take airspace violations. Flying a drone in restricted areas is not just risky, it’s illegal, with penalties ranging from fines to imprisonment. This article explains the different levels of restricted airspace and what can happen if you ignore them.
What Is “Restricted Airspace”?
Restricted airspace refers to areas where drone operations are limited or prohibited to protect safety, security, and operations. These zones can be permanent, such as around airports or military sites, or temporary, like during events or emergency responses. Restrictions often exist in layers or levels, indicating different levels of control or required permissions. For example, some zones may allow flight with authorisation, while others are completely off-limits. Understanding these layers is crucial for planning safe flights and avoiding legal penalties in the UK. Tools like The Drone Map make it easier to visualise these areas.
Types and Levels of Restricted Airspace (Colour-Coded)
The DJI Geofencing technology will automatically prevent you from flying in these high-risk areas, but it can be overridden, so be careful.
🔴 Red – High-Risk / Restricted Airspace
- Includes:
- Aerodrome Traffic Zone (ATZ)
- Control Zone (CTR)
- Danger Areas
- Flight Restriction Zone (FRZ)
- Restricted Areas
- Temporary Flight Restriction (TFR)
- Intermittent Airspace
- Meaning: Red zones are regulated, high-risk areas. Drone operation may be hazardous or completely prohibited.
- Action: Obtain explicit permission before flying. Violating these zones can lead to fines, legal action, or drone confiscation.
🟡 Yellow – Areas of Increased Risk
- Includes: Areas where drone operation may raise security, privacy, or safety concerns.
- Meaning: Exercise caution. Flights may be allowed but could require special permissions.
🔵 Light Blue – Navigation Warnings
- Includes: Notices of areas that will shortly become red or yellow, or yellow zones with a blue border indicating current drone activity.
- Meaning: Advanced warnings. Check before flying to avoid entering restricted airspace inadvertently.
🔵 Dark Blue – Flight Reports
- Includes: Areas where users have reported planned drone activity to the aviation community.
- Meaning: Helps improve safety. Activating Airspace Alerts can inform other pilots of your planned flight.
Consequences of Illegal Entry into Restricted Airspace
Most of us don’t want to be on the wrong side of the law, and certainly don’t want to endanger anyone’s life. But unfortunately, some act without thinking, which can have serious consequences.
Operating a drone within restricted airspace in the UK without proper authorisation is a serious offence, carrying significant legal, financial, and reputational risks. Here’ are ‘s a list of what to expect for flying irresponsibly.
Legal Penalties and Criminal Charges
Under the Air Navigation Order 2016 and the Aviation and Maritime Security Act 1990, individuals who recklessly or negligently endanger an aircraft or its occupants can face severe penalties. Offenders may be subject to:
- Unlimited fines and/or
- Imprisonment for up to 5 years for endangerment offences Gardner Leader.
In cases involving intentional acts of violence at international airports, penalties can escalate to life imprisonment. Gardner Leader.
Drone Confiscation
Authorities have the power to seize drones involved in illegal operations. For example, in 2025, two individuals were arrested for flying drones that breached airspace restrictions in Windsor Great Park during a state visit. Both drones were confiscated as part of the investigation. Thames Valley Police.
Civil Liability and Compensation
Drone operators who violate airspace restrictions may be held liable for damages resulting from their actions. This includes compensating for:
- Property damage caused by drone collisions
- Business interruptions due to flight cancellations or delays
- Legal costs incurred by affected parties
In some instances, landowners have sought injunctions against drone trespass over their property, highlighting the potential for civil legal actions. Osborne Clarke.
Real UK Cases and Prosecutions
- Robert Knowles (2014): The UK’s first drone conviction. Prosecuted for flying a drone in restricted airspace over a nuclear facility and too close to a vehicle bridge. He was fined £800, and the Civil Aviation Authority was awarded costs of £3,500.
- Gatwick Airport Incident (2018): Drone sightings near Gatwick Airport led to significant flight disruptions. Although no charges were brought, the incident raised awareness about the potential consequences of drone misuse. Wikipedia.
How to Check Before You Fly
Ensuring your drone flight complies with UK regulations is essential. Here’s how to check before taking off:
1. Use Drone Assist or Altitude Angel
Apps like Drone Assist and Altitude Angel’s Drone Safety Map provide real-time maps of Flight Restriction Zones (FRZs), temporary restrictions, and hazards. They help you plan flights safely and legally.
2. Check NOTAMs and AIS Data
NOTAMs inform pilots of temporary restrictions or hazards. Access UK NOTAMs via NATS AIS and subscribe to Pre-Flight Information Bulletins for updates.
3. Submit Permissions for Non-Standard Flights
If your flight enters an FRZ or restricted area, contact the aerodrome operator or CAA for permission.
For a full step-by-step guide on flying in an FRZ, see: How to Fly Your Drone in a Restricted Flight Zone (FRZ): Step-by-Step Guide.
For example, Cambridge City Airport requires 48-hour advance requests (cambridgeairport.com).
4. Stay Updated
Airspace restrictions can change quickly. Regularly check NATS AIS and mapping apps for temporary restrictions to avoid breaches.
Drone Related Criminal Conviction Examples
Here are some more notable cases where individuals have faced legal consequences in the UK for flying drones in restricted airspace:
1. Lucy Adcock – Jailed for Drone Smuggling Operation
In July 2024, Lucy Adcock, a mother of five, was sentenced to six years in prison for orchestrating a £1 million operation involving drones to smuggle drugs and mobile phones into six UK prisons. Adcock directed 22 drone incursions over a span of one month, transporting packages containing cocaine, spice, phones, and SIM cards valued at approximately £1.42 million. She was apprehended after a drone drop at Parc Prison in Bridgend revealed incriminating software on the device found in her car. Co-conspirators Craig Davenport and Ryan Dorland, who assisted in flying the drones, received sentences of four years and nine months, and four years respectively. The Sun
2. Man Arrested for Flying Drone Over Edinburgh Airport
On October 9, 2025, a man was charged after a drone entered restricted airspace near Edinburgh Airport, causing several flight delays. The UK Civil Aviation Authority guidelines state that drones cannot be operated within 5km of an airport without permission. The individual was traced by the police and charged accordingly. Edinburgh News
3. Drone Pilot Arrested During Trump’s State Visit
In September 2025, a 37-year-old man from Brentford, London, was arrested at Windsor Great Park for flying a drone that breached airspace restrictions imposed for the state visit of US President Donald Trump. The incident was investigated under aviation legislation, highlighting the serious nature of violating temporary airspace restrictions. Thames Valley Police
4. Man Fined for Illegal Drone Flights Over East Midlands Airport
In August 2023, a man was fined almost £1,500 after pleading guilty to flying in restricted airspace above East Midlands Airport to capture footage of the 2023 Download Festival. The incident underscores the importance of adhering to airspace regulations, even during events.
These cases serve as stark reminders of the legal repercussions of flying drones in restricted airspace without proper authorization. It’s crucial for drone operators to be aware of and comply with airspace restrictions to ensure safety and avoid legal consequences.