I am grateful to the right hon. Member. May I place on record a tribute to his predecessor, the hon. Member for Llanelli (Nia Griffith), who did a great job as shadow Defence Secretary, sometimes in difficult circumstances?
We have done it slightly differently from the United States with testing our personnel. We have no problems whatsoever testing whoever we want, when we want. The best example I can give is that, before embarkation, we tested all 799 of the crew of the Queen Elizabeth carrier. We will test them again throughout their period of sailing and when they return.
We have a strategy around protecting the national security-vital parts of our forces, which involves testing and quarantine. That is also being carried out in areas that I will not particularly comment on; nevertheless, the right hon. Member mentioned what the Americans view as strategically important. We do not have a mass programme; we have testing that is available—we do not have any problems acquiring it—and, as we bring forces up to either readiness or deployment, there is an opportunity if required, if quarantine has not done the job, to test them as well.