NHS national medical director Professor Stephen Powis has called on anyone who qualifies for a jab, but has not yet received one, to book an appointment in the next few days before slots dry up.

The country’s top doctor made the call after NHS staff delivered more than 3.5 million doses in the seven days to 21 March, 1.5 million up on the previous week which had also been a record.

The success of the vaccination drive means that four in five people in the first nine priority groups have now received at least one dose since the NHS vaccination programme began.

Far fewer appointments will be available for first doses from next week as the bulk of available supplies are used to fully vaccinate people with a second jab.

Powis said: “It is a testament to the careful planning and sheer hard work of staff that the NHS vaccination programme is continuing to protect people against coronavirus at a record pace. I was thrilled to get my first dose earlier this month, it was quick, painless and safe and it feels great knowing I’ve got protection against Covid-19 so if you are eligible do not delay, book a jab.”