How high can a drone legally fly in the UK? A guide to height limits

In most cases, drones in the UK can legally fly to a maximum height of 120m (400ft) above the surface below the aircraft. This limit applies to most drone operations. Some operators can fly higher, as long as they have a specific UK SORA Operational Authorisation to do so, or if they are flying above structures over 105m in height, but with conditions.

Key takeaways

• The maximum legal drone height in the UK is 120m (400ft) above the surface below the drone.

• The 120m limit applies to most recreational and commercial drone flights conducted in the Open and Specific categories.

• Height is measured from the ground directly beneath the aircraft, not from the original take-off point.

• Certain operations may be permitted above 120m with a UK SORA Operational Authorisation.

• Many DJI drones can technically operate at altitudes far greater than 120m, but UK legal limits still apply.

• Understanding drone height limits is essential for safe and compliant operations.

What is the maximum legal drone height in the UK?

For most drone operations in the UK, the maximum permitted height is 120m (400ft) above the surface below the aircraft.

This rule is set by the UK Civil Aviation Authority (CAA) and applies to most drone flights, but there are some exemptions, which we will come to later.

The purpose of the height restriction is to help maintain safe separation between drones and manned aircraft, reducing the risk of airspace conflicts and improving safety for all airspace users.

Unless you are operating under a specific authorisation or exemption, flying above 120m is generally not permitted.

How is drone height measured?

One of the most common misconceptions about drone regulations is how altitude is measured.

The 120m limit is measured from the surface directly beneath the drone, not from the pilot's take-off location.

For example, if you launch your drone at the bottom of a hill and fly up the slope, you can continue climbing while remaining within the legal limit, provided you stay within 120m of the ground below the aircraft.

Likewise, if the terrain drops away beneath the drone, pilots must ensure they do not exceed the maximum permitted height relative to the surface below.

This is particularly important for surveying, mapping, inspections, and operations in hilly or mountainous terrain.

Can you fly a drone above 120m?

In some circumstances, yes.

However, pilots should never assume they can exceed the standard limit.

Any operation above 120m must be supported by the appropriate authorisation, and risk assessment process.

Flying over tall structures

If the person or organisation responsible for a structure over 105m asks you to carry out a task related to their structure, you’re allowed to fly higher than 120m (400ft).

But:

• You must never fly more than 15m above the structure.

• Your drone must be within 50m of the structure horizontally when flying over 120m (400ft).

UK SORA

In all other cases to fly legally above 120m (400ft), a UK SORA Operational Authorisation is required.

A SORA application requires a detailed operations manual, which the UK CAA must sign off. They will assess the plan against operational safety objectives, using the SAIL marking system to evaluate risk levels.

heliguy™ has a UK SORA consultancy to help you obtain this type of authorisation.

Common myths about legal drone height limits

Why does the 120m drone height rule exist?

The 120m rule helps create a safe buffer between drones and other aircraft.

Manned aircraft generally operate at higher altitudes, while drones occupy lower-level airspace. By limiting routine drone operations to 120m, regulators can reduce collision risks and support the safe integration of drones into UK airspace.

The rule also provides a clear and consistent framework for both recreational and professional operators.

How high can DJI drones fly?

Many DJI drones are technically capable of flying far higher than the UK's legal drone height limit.

For example, DJI Enterprise aircraft are designed to operate in challenging environments, including mountainous regions and high-altitude locations. Some models have maximum operating altitudes of 6,000m or even 7,000m above sea level.

However, these figures refer to the drone's performance capabilities rather than the height it can legally be flown in UK airspace.

Regardless of the aircraft's specifications, operators must still comply with applicable CAA regulations unless operating under an approved exemption or authorisation, such as a specific UK SORA Operational Authorisation.

The table below shows the maximum altitude of some of DJI's most popular drones.

How heliguy™ can help

Understanding drone regulations is essential for safe and compliant operations.

heliguy™ supports organisations and operators with:

• Drone training courses

• Operational Authorisation guidance

• UK SORA support and regulatory consultancy

• DJI drone supply

Whether you're conducting inspections, surveys, mapping missions, or advanced commercial operations, our specialists can help you navigate the regulatory requirements and build a compliant drone programme.

To learn more, get in touch with our team.

Summary

The maximum legal drone height in the UK is generally 120m (400ft) above the surface below the aircraft.

While many modern drones are capable of operating at much greater altitudes, pilots must comply with CAA regulations and understand how height limits are measured.

For advanced operations that may require drone flights above the standard 120m (400ft) limit, operators should ensure they have the appropriate authorisations, procedures, and training in place before conducting the mission.