But Boris Johnson said the public should not be concerned about the progress of the vaccine rollout.
The Prime Minister said: We re very confident in all the vaccines that we re using. It s important for people to bear in mind that all of them, we think, are effective in delivering a high degree of protection against serious illness and death, which is the most important thing.
Boris Johnson announcement: Is Boris speaking about Covid today? PM s schedule in full (Image: PA)
Boris Johnson announcement: Mr Johnson will take to the podium in PMQs today (Image: PA)
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Is Boris Johnson speaking today?