People aged 40 and over are now able to book their second jab on the national booking system, from eight weeks after their first dose.
Anyone aged 40 and over who has already booked their second jab at 12 weeks via the national booking system, will need to cancel their appointment and re-book for an earlier eight week slot.
There is no need to worry about cancelling any existing booking because there are plenty of booking slots available.
At the same time, people aged 21 and over are now urged to book their first jab appointments, as soon as possible.
Second jabs are vital to ensure maximum protection against the latest variant. Studies have found the Pfizer-BioNTech vaccine to be 96 per cent effective against hospitalisation after two doses, and the Oxford-AstraZenaca is 92 per cent effective.
Bookings can be made via the National Booking Service, while people who cannot get online can call the service on 119.
NHS Chief Executive, Sir Simon Stevens has announced that all adults aged 18 or over will be eligible for the vaccine by the end of this week.