Nearly 1.5 million people have now been vaccinated against Covid-19 in the UK, Prime Minister Boris Johnson has said, including 1.26 million in England.

Meanwhile, a further 1,162 people have died in the UK within 28 days of testing positive for the virus - the highest daily reported total since 21 April when 1,224 were recorded.

It brings the overall toll to 78,508.

The official figures continue to be affected by a lag in the publication of recent data and contain some deaths that took place over the Christmas and New Year period that have only just been reported.

Separate figures published by the UK's statistics agencies for deaths where Covid-19 has been mentioned on the death certificate, together with additional data on deaths that have occurred in recent days, show there have now been 94,000 deaths involving Covid-19 in the UK.

As of 9am today, there had been a further 52,618 confirmed cases of coronavirus in the UK, bringing the total number of infections to 2,889,419.

Health Secretary Matt Hancock said that people may need to have a coronavirus vaccine every six months.

But Mr Hancock also said that he believed the current lockdown would be the last that was required, because of the vaccines.

"There is absolutely no doubt that vaccines and testing will still be a feature next year," he told MPs on the Health and Social Care Committee.

"We will need both the surveillance testing to be able to understand where the virus is and we will need testing for people who have symptoms, in the same way that you get tested for all sorts of other things."

Mr Hancock said: "I anticipate we will probably need to revaccinate because we don't know the longevity of the protection from these vaccines.

"We don't know how frequently it will be, but it might need to be every six months, it might need to be every year."

Asked if he thought this would be the "last of the lockdowns" because of the vaccines, Mr Hancock said: "I do, yes."

Mr Hancock said he hoped all NHS staff would be offered the jab in the next few weeks, possibly even sooner than the 15 February target.

The need for the vaccine to have an impact was illustrated by exhausted staff in one of England's largest hospitals who said they are working "to the limit" of their ability.

At St George's Hospital in south London, the trust has had to vastly expand intensive care capacity and move under-qualified staff to high dependency roles.

Dr Mark Haden, an emergency department consultant, said: "Everyone is working to the limit, to the threshold of what they're able to.

"The hospital bed occupancy is very, very high, it has lots of Covid patients as inpatients at the moment. It's very stressful for staff and that is starting to show."

As of 4 January, there were 30,451 people in UK hospitals with coronavirus, much higher than the 12 April peak of 21,684.

Meanwhile, family doctors are experiencing problems getting vaccine supplies for their patients, the Royal College of General Practitioners (RCGP) has warned.

The "teething problems" risked causing disappointment for vulnerable people who are at the front of the queue to receive the jabs, RCGP chair Professor Martin Marshall said.

The comments came as Mr Hancock launched the mass rollout of the Oxford/AstraZeneca Covid-19 vaccine to GP surgeries.

The surgery Mr Hancock visited to launch the programme had not received an expected delivery of the Oxford vaccine, which is easier to distribute than the Pfizer/BioNTech jab which has to be kept frozen.