questionText: To ask the Secretary of State for Defence, what the additional cost is to the purchase of the 12 F-35A aircraft of specifying their air-to-air refuelling capability as probe-and-drogue.
answerText: The procurement of 12 F-35A rather than 12 F-35B as part of the next procurement package is expected to deliver a saving of up to 25% per aircraft for the taxpayer. 
heading: F-35 Aircraft: In-flight Refuelling