# The Unmanned Aircraft (Amendment) Regulations 2025, Regulation 12: Amendment of Part 5 of the Annex


(1) In Part 5 of the Annex (requirements for a class C4 UAS), after point (3), insert—
“(3A) have a unique serial number compliant with standard ANSI/CTA-2063-A-2019, Small Unmanned Aerial Systems Serial Numbers, 2019;
(3B) have a direct remote identification that:
(a) allows the upload of the UAS operator registration number required in accordance with Article 14 of Implementing Regulation (EU) 2019/947 and any additional number provided by the registration system; the system shall perform a consistency check verifying the integrity of the full string provided to the UAS operator at the time of registration; in case of inconsistency, the UAS shall emit an error message to the UAS operator;
(b) ensures, in real time during the whole duration of the flight, the direct periodic broadcast from the UA using an open and documented transmission protocol, in a way that it can be received directly by existing mobile devices within the broadcasting range, of at least the following data:
(i) the UAS operator registration number and the verification code provided by the CAA during the registration process unless the consistency check defined in point (a) is not passed;
(ii) the unique physical serial number of the UA compliant with point (3A);
(iii) the time-stamp, the geographical position of the UA and its height above the surface or take-off point;
(iv) the route course measured clockwise from true north and ground speed of the UA;
(v) the geographical position of the remote pilot or, if not available, the take-off point; and
(vi) an indication of the emergency status of the UAS;
(c) reduces the ability of tampering the functionality of the direct remote identification system;”.
(2) In point (4)(a), after the fourth list item—
(a) omit “and”;
(b) insert—
“the procedures to upload the UAS operator registration number into the direct remote identification system;
reference of the transmission protocol used for the direct remote identification system emission; and”.

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Source: https://www.legislation.gov.uk/uksi/2025/1106/regulation/12 (the official version)
Page: https://openlegislation.uk/unmanned-aircraft-amendment-regulations-2025/regulation-12
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.