UK drone class marks: UK0–UK6 and the C-mark transition
✓ Reviewed against CAA sources on 6 July 2026
Since 1 January 2026, any new drone model placed on the UK market must carry a UK class mark — UK0 through UK6. The mark tells you which Open sub-category you can fly in and what IDs you need. European C class marks (C0–C6) are recognised as their UK equivalents until 31 December 2027; from 2028, C-marked drones become 'legacy' aircraft and fall back to the weight-based rules.
The classes at a glance
| UK0 (≙ C0) | Under 250g · flies in A1 Over People |
| UK1 (≙ C1) | Under 900g · flies in A1 Over People · Remote ID on |
| UK2 (≙ C2) | Under 4kg · A2 Near People with A2 CofC, else A3 · Remote ID on |
| UK3 (≙ C3) | Under 25kg, under 3m · A3 Far From People · Remote ID on |
| UK4 (≙ C4) | Under 25kg · A3 Far From People (typically model aircraft) |
| UK5 / UK6 | Specific category — requires a CAA Operational Authorisation |
Remote ID: pilots must fly with broadcast Remote ID switched on when flying UK1, UK2 or UK3 class drones. UK0 (sub-250g) is exempt.
No class mark?
Drones without any class mark are legacy aircraft and use the weight table: under 250g flies in A1, under 2kg in A2 (with an A2 CofC), under 25kg in A3. Your pre-2026 drone doesn't become illegal — it just follows these weight rules. Some manufacturers may offer retrofit UK class-mark labels; that's at their discretion, not a CAA process.
On PitchYaw product pages we show each drone's class mark in its spec table — browse the database and filter by class.
Official sources
This page is a plain-English summary, not legal advice. The CAA links above are always the authoritative version.