As many as 721,469 appointments were made through the national booking service on Friday -- the day of the announcement -- at an average of more than eight every second. To cope with demand, the NHS said it is using stadiums and football grounds as giant vaccination centres.
The warning comes after two National Health Service (NHS) workers experienced 'anaphylactoid reaction' symptoms shortly after being injected, but are now said to be recovering well.
Maggie is among the first set of people contacted in advance by the NHS for the jab based on a pre-determined health risk criteria and will include 87-year-old British Indian grandfather of nine Hari Shukla, who will get his first dose at a hospital in Newcastle.