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UK Drone Class Marks Explained

Drone Safe Store October 5th, 2026
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The Class Marks at a Glance

Class

Max weight

Open Category subcategory

Notes

UK0

Under 250g

A1 (over people)

Most sub-250g consumer drones

UK1

Under 900g

A1 (over people)

Requires low-speed mode and electronic ID

UK2

Under 4kg

A2 (near people) with an A2 CofC, A3 without

A2 CofC unlocks 30m proximity to uninvolved people

UK3

Under 25kg, under 3m

A3 (far from people)

50m minimum from uninvolved people

UK4

Under 25kg

A3 (far from people)

50m minimum from uninvolved people

UK5

Under 25kg

Specific Category only

Needs a CAA Operational Authorisation

UK6

Under 25kg, under 3m

Specific Category only

Needs a CAA Operational Authorisation

Why the Class Mark Matters More Than Weight Alone

Two drones can weigh the same and still operate under different rules, because the class mark carries safety features the weight figure alone doesn't capture, low-speed modes, electronic identification, build standards verified against a defined UK specification. A UK1-marked drone under 900g gets A1 privileges, flying close to and over individual uninvolved people; an unmarked or legacy drone of the same weight doesn't get the same allowance without meeting the older, weight-only fallback rules instead.

EU C-Class Marks Are Still Recognised, For Now

DJI and other manufacturers have historically used EU C-class marks (C0 to C6), and these remain valid under UK rules on a transitional basis. C0 maps to UK0, C1 to UK1, C2 to UK2, and C3/C4 map to UK3/UK4, giving the same Open Category access as their UK equivalents. That recognition runs out on 31 December 2027, after which C-marked drones not reclassified or upgraded become legacy aircraft, falling back to weight-only rules and losing any reduced separation distances the class mark had unlocked.

Legacy and Unmarked Drones

A drone bought before class marks existed, or one that never carried one, isn't grounded, it simply falls back to the older weight-based Open Category rules: under 250g gets A1, under 2kg with an A2 CofC gets A2, and under 25kg defaults to A3. These legacy aircraft can't access the reduced separation distances a genuine UK2 class mark unlocks, so a heavier legacy drone ends up needing more distance from people than an equivalent class-marked one, worth checking before assuming an older aircraft has the same flying privileges as a newer, marked equivalent.

What This Means When Buying

A drone's class mark, not just its weight, decides where it can legally be flown, so it's worth checking before a purchase rather than after. Enterprise aircraft in the 1kg to 15kg range, the bracket most DJI Enterprise platforms fall into, typically carry UK3, UK4, UK5 or UK6 marks and operate under A3 or a Specific Category authorisation regardless, so class mark differences matter less at that weight than they do for lighter consumer and prosumer drones weighing closer to the UK0/UK1/UK2 thresholds.

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