For drones weighing a lot less than 250g without having a digicam, neither ID is important. That said, you still really need to comply with the UK’s drone guidelines. According to the Drone Code, What this means is sustaining visual connection with your drone, traveling no higher than 120m over https://www.aeroindustrial.com/product/dji-matrice-350-rtk-combo-con-dji-care-basic/