My hon. Friend is absolutely right. I have spoken already about our incredible vaccine—our world-leading vaccine—which we are proud of. Our work and focus since the development of the vaccine have been about protecting that vaccine from new strains, hence the measures that we brought in in December—the pre-travel tests and the carrier liability for pre-travel tests as well. Those are important measures, and they are clearly linked to the vaccine, but also to stopping the spread of coronavirus.