Quick Answer
A Flyer ID proves that the person flying has passed the CAA theory test. An Operator ID identifies the person or organisation responsible for the aircraft. Under UK rules, a Flyer ID is required from 100g, while an Operator ID is required from 250g or from 100g with a camera. Aircraft below 100g do not require either ID.
Flyer ID vs Operator ID: The Difference
The simplest distinction is pilot versus responsibility. The Flyer ID belongs to the person at the controls; the Operator ID belongs to the adult or organisation that manages the aircraft. You can fly somebody else’s drone using your own Flyer ID, while it remains labelled with its operator’s ID.
| Question | Flyer ID | Operator ID |
|---|---|---|
| What does it show? | You passed the CAA’s basic competence test | You are responsible for managing the aircraft |
| Minimum age | No minimum, but under-13s register with a parent or guardian | 18 |
| Cost | Free | £12.34 |
| Validity | 5 years | 1 year |
| Goes on the aircraft? | No | Yes |
| Covers several aircraft? | It belongs to one flyer | The same ID covers every aircraft for which that operator is responsible |
The CAA test has 40 multiple-choice questions, a pass mark of 30 and is open-book using the Drone and Model Aircraft Code. We would take it even for a sub-100g aircraft: it is free and teaches rules that still apply without registration.
The Weight and Camera Rule That Changed
Older UK advice often says that every camera drone needs registration. That is now wrong. From 1 January 2026, the key lower threshold is 100g. A camera matters only in the 100g-to-under-250g band, where it turns the otherwise optional Operator ID into a requirement.
| Aircraft | Flyer ID | Operator ID |
|---|---|---|
| 250g to under 25kg, or UK1 to UK4 class | Required | Required |
| 100g to under 250g with a camera, including UK0 | Required | Required |
| 100g to under 250g without a camera | Required | Optional |
| Below 100g, with or without a camera | Recommended, not required | Optional |
This is why the scale matters more than the words “FPV drone”. Our Nanofly20 Analog listing specifies 33g and the Nanofly20 Walksnail 42.8g. Both carry cameras yet sit below 100g, so neither ID is required under the current registration table. The flight rules still apply.
Weigh a self-built quad ready to fly, including its battery and camera. “Sub-250g” marketing does not answer whether the finished aircraft crosses 100g.
One Operator ID for Several Drones
If you are responsible for several aircraft, use the same Operator ID on every one that requires it. Do not put a Flyer ID on the aircraft or buy a different Operator ID for each drone.
The label must be on the main body, in block capitals taller than 3mm, secure against damage, and visible externally or inside a compartment that opens without a tool.
Children, Parents and Shared Aircraft
A child flying an aircraft that requires a Flyer ID needs their own. Under-13s take the test with a parent or guardian, and under-12s must fly under supervision from someone aged 16 or over. If children aged 11 and 15 share a 500g drone, both need Flyer IDs, while an adult must hold the Operator ID. The adult needs no Flyer ID if they never fly.
How to Get the IDs
Check the class mark, ready-to-fly weight and camera first. Then read the Drone Code and use the CAA registration service. Renew the Operator ID annually and retake the Flyer ID test after five years.
Registration is not permission to fly anywhere. Airspace, height, distance and visual-line-of-sight rules still apply. Read our UK drone laws guide, or browse our beginner FPV kits after checking flight-ready weight.
FAQ
Q: Which best describes the difference between a Flyer ID and an Operator ID?
A: A Flyer ID shows that the pilot passed the CAA theory test and understands how to fly safely and legally. An Operator ID identifies the adult or organisation responsible for managing, maintaining and labelling the aircraft.
Q: What must I do if I am responsible for several drones?
A: Label every aircraft that requires an Operator ID with the same Operator ID. You do not register each aircraft separately.
Q: Is it the Flyer ID or Operator ID that goes on the drone?
A: The Operator ID. It must be on every aircraft that requires one. Never label an aircraft with your Flyer ID.
Q: Does a camera drone below 100g need registration?
A: No. Under the current CAA registration table, an aircraft below 100g does not require a Flyer ID or Operator ID, even with a camera. The CAA recommends taking the free Flyer ID test, and all applicable flight rules still apply.