@Crackerjack all EASA C-labeled drones become legacy drones from 1st January 2028 when that transition period ends. More information is available in the two videos available in the first post here: UK Class Marks and Remote ID: What you need to know before 1st January 2026
You can pickup the conversation over there 
If we could keep this thread on the topic of the DJI Mini 5 Pro, please 