My Lords, naturally I thank my noble friend for that Answer. I have just returned from the very efficiently run county showground vaccination centre outside Lincoln, where I have had my first dose and have been given a date for my second. My noble friend has certainly reassured me on the Government’s determination both to give the same vaccine and at the right time. However, is he aware of the findings in Israel, where there has been an extremely impressive rollout of vaccination, which have cast considerable doubt on the wisdom of delaying the second dose? This has caused a great deal of concern, not least in your Lordships’ House, voiced by the noble Baronesses, Lady Boothroyd and Lady Bakewell, among others. Can he please give us some reassurance that there is no danger of diminishing the efficacy of the vaccine by delaying the second dose?