My Lords, on 4 March, the government advice on face masks was that they do nothing, so do not wear them. On 17 April, the advice was that they do more harm than good, and on 11 May, it was that wearing one is an added precaution. As of 4 June, wearing them is to be compulsory. In that time, the science did not change but the death toll rose. Why have the Government failed to distinguish between PPE standards necessary in acute treatment settings and masks which are suitable for people using public transport? Why, given this record, should the public trust them during a second spike?