The Boeing P-8 Poseidon is a better platform really, although we have only ordered 9 of which 5 are delivered. It will be cheaper to maintain than Nimrod. But i think they should have got Nimrod upgraded and then moved to the P-8 by 2030 giving Nimrod another 20 years of service which would be perhaps something worth the upgrade investment and we would have had no gaps in our capability in this department, instead we relied on the French to fulfill it! A sin!The Nimrod was a multi purpose aircraft . Maritime patrol, anti submarine, search and rescue . It could carry cruise missiles as well as homing torpedoes. They will have a job finding a replacement which is just as capable .