Dr Julian Lewis: Can my hon. Friend confirm that it is our intention to build the two carriers so that both are able to operate fixed-wing aircraft and that we will purchase enough fixed-wing aircraft to operate from both of those carriers?

[The Parliamentary Under-Secretary of State for Defence (Peter Luff): I can confirm that both carriers will be built; it will be a decision in the next SDSR as to whether or not both are operated. Similarly, we are following an incremental acquisition policy on the Joint Strike Fighter itself. Therefore, I cannot give my hon. Friend the comfort he is seeking at this stage, as this relates to a commercial negotiation and a strategic decision for the next SDSR.]