The Royal Navy’s Mine and Bomb Disposal Unit is based in Plymouth and covers England for disused munitions found on land and at sea. The service is called out to disarm, make safe and explode any live munitions such as this World War I bomb found on a beach at Portwrinkle in Cornwall. Naval Sub Lieutenant Jenkins explains to reporter David Mudd the work of the service with men who are qualified divers and who operate at sea demining and exploding ordnance.