The UK prime minister has announced England will soon start operating 24-hour vaccine centres to boost the number of people receiving jabs for COVID-19.
Boris Johnson told MPs on Wednesday Health Secretary Matt Hancock will unveil the plans "in due course" however there was a delay with the roll-out of the centres because of the supply of the vaccines.
"We will be going to 24/7 as soon as we can," he said during his weekly Prime Minister's Questions event in the British parliament.
"At the moment the limit is on supply, we have a huge network - 233 hospitals, 1000 GP surgeries, 200 pharmacies and 50 mass vaccination centres and they are going... exceptionally fast."
The British government has said it plans to offer each person in its top four vulnerable groups - including care home residents and people aged 80 and over - and health workers a vaccine by February 15.
It has not given a target number of vaccines, however a report from the London School of Hygiene and Tropical Medicine said 2 million people in England need to be given jabs each week, alongside a lockdown in January, to prevent intensive care units in hospitals becoming overwhelmed in the future.
According to the latest figures from the government, a total of 2.4 million people have received a jab in the UK so far.
Johnson's announcement comes as Scotland's First Minister Nicola Sturgeon revealed tougher measures will come into force for Scotland from Saturday.
They include banning the drinking of alcohol outside in areas with the toughest restrictions, known as level 4, and stopping people from going into restaurants and collecting their takeaway food.
The UK on Wednesday reported 1564 new deaths within 28 days of a positive test from COVID-19, a record daily toll, with another 47,525 additional cases.
The reported number of deaths exceeds the 1325 recorded on January 8.