To ask Her Majesty’s Government, further to the Written Answers by Earl Howe on 16 December (HL4512 and HL4513), what "when necessary to deliver the carrier strike programme" means precisely.

Our aim is to ensure that embarked, jointly manned F-35B air squadrons operate to the same harmony guidelines. The overall principle is that we will manage all embarked air squadrons - which will include Fixed and Rotary Wing forces and personnel from all three Services - to ensure that the different harmony guidelines which all three Services routinely apply, do not adversely affect the way in which the operational output of the aircraft carriers will be delivered, and that they do not undermine joint unit or joint force cohesion. This principle will be given practical application as we continue our work to develop the routine carrier, combat air and helicopter operating cycles from 2020.