My hon. Friend is quite right. The supply of vaccines can take place on all seven days of the week, but, in a regular way, we do it on six days of the week and then, on the seventh day, people can either rest or deliver further vaccine if that is what is necessary. As a result of this delivery schedule, there has been no point at which any area has been short of vaccine. We have a challenge, which is to increase the amount of vaccine available. The current rate-limiting factor on the vaccine roll-out is the supply of approved, tested, safe vaccine, and we are working with both AstraZeneca and Pfizer to increase that supply as fast as possible. They are doing a brilliant job, but that is the current rate-limiting step. As that supply increases, we will need more people to give vaccinations. We will need to get pharmacists involved in the vaccination. I very much hope to get my right hon. Friend the Member for South West Wiltshire (Dr Murrison), a former doctor, and
others involved in vaccinations. We will need more people, but the current rate-limiting factor is the supply of vaccines.
That is not to say that the companies are not supplying on the schedule that was agreed; they are, and they are doing their bit, but we do need to increase that supply and then the NHS will increase its delivery. I hope to make that point crystal clear, because Public Health England work to get the vaccine out is not a rate-limiting factor, the current discussion with pharmacists is not a rate-limiting factor, and the fill and finish is not a rate-limiting factor. What is a rate-limiting factor is the amount of the actual juice—the actual vaccine—that is available, which is not manufactured like a chemical. It is a biological product. I do not know whether you bake your own bread, Madam Deputy Speaker, but I sometimes do and it is a bit like the creation and the growth of yeast. That is probably the best way to think of it. It is a complicated and difficult task and that is the rate-limiting factor. I pay tribute to those who are engaged in the manufacturing process of this critical product.