Nimrod Aircraft Nick Harvey To ask the Secretary of State for Defence what his most recent estimate is of the cost to the public purse of the Nimrod MR2 modification programme announced in March 2009. Mr. Quentin Davies The cost of replacing a number of fuel seals and the engine hot air ducts on the Nimrod aircraft, as announced on 9 March 2009, Official Report, columns 1-2WS, together with associated maintenance work, was in the order of £16 million.