UK has been without a dedicated maritime patrol aircraft capability since the Royal Air Force retired its last Nimrod MR2s (pictured) in 2010. Their planned replacement – BAE Systems' Nimrod MRA4 – was cancelled in an SDSR later the same year.
The Hawker Siddeley Nimrod manufactured by Hawker Siddeley now BAE Systems is a maritime patrol aircraft developed from de Havilland Comet. The Hawker Siddeley Nimrod is capable of carrying American-made Harpoon anti-ship missiles and Sidewinder air-to-air missiles for self-defense. The Hawker Siddeley Nimrod has been the Royal Air Force's primary Maritime Patrol Aircraft (MPA) since the early 1970s, when it replaced the piston-engine Avro Shackleton.