For drones weighing fewer than 250g without having a camera, neither ID is necessary. Having said that, you still need to adjust to the united kingdom’s drone laws. According to the Drone Code, This implies maintaining Visible connection with your drone, traveling no greater than 120m previously mentioned the ground, https://www.aeroindustrial.com/product/dji-matrice-3td-con-dji-care-plus-1-ano/