For drones weighing under 250g with no camera, neither ID is essential. Having said that, you still need to adjust to the UK’s drone guidelines. In accordance with the Drone Code, What this means is keeping Visible contact with your drone, flying no better than 120m earlier mentioned the ground, https://www.aeroindustrial.com/compra-drones-dji-y-accesorios-en-la-tienda-en-linea-de-aero-industrial/