I was following the hon. Gentleman's thoughtful contribution until he made his last observation. We have committed ourselves to two new carriers, which will have more capability than the existing vessels. It would be unfortunate if any Government went back on such an undertaking.

On the nature of the aircraft, some matters have to be carefully investigated when selecting the type of aircraft to fly from such vessels. They have implications for the size and specification of the carriers. Those matters remain under active consideration. No decision has yet been made on those precise matters.