Fourteen more coronavirus patients have died, bringing the death toll in the UK to 35.
The number of people who have tested positive for the virus has also risen to 1,372 – an increase of 232 in a one day.
It marks another sharp increase in the country's infection count, although the number of new cases declared on Sunday is lower than the 342 reported the day before.
The death count continues to rise.
The latest figures come as the University of Exeter confirmed one of its students has tested positive for coronavirus while abroad.
In a letter to students, Mike Shore-Nye, registrar and secretary of the university, said: “Our immediate concerns are for the affected student, their family and friends, as well as the health and wellbeing of our university community.
“The student has not been on campus since 12 March and tested positive at home.”
The student, who is currently with their family and feeling “relatively well”, lives alone in a private one-bedroom apartment when in Exeter, Mr Shore-Nye said.
Elsewhere, Public Health Wales confirmed 34 new cases of Covid-19 in Wales on Sunday, bringing the total number confirmed in the country to 94.
Eleven new cases were confirmed in Northern Ireland, bringing the total number of known cases there to 45.
Earlier on Sunday, health secretary Matt Hancock said people aged over 70 will be asked in the coming weeks to self-isolate for up to four months, in order to protect them from the virus.
Asked if that time frame was in the Government’s plan, he told Sky’s Sophy Ridge On Sunday: “That is in the action plan, yes, and we will be setting it out with more detail when it is the right time to do so, because we absolutely appreciate that it is a very big ask of the elderly and the vulnerable, and it’s for their own self-protection.”
Pressed on when the measure will be introduced, he said: “Certainly in the coming weeks, absolutely.”
Mr Hancock added: “The measures that we’re taking, the measures that we’re looking at taking, are very, very significant and they will disrupt the ordinary lives of almost everybody in the country in order to tackle this virus.”
He also confirmed that ministers were seeking to give police powers to arrest and forcibly quarantine people who are sick with the virus but are not self-isolating.
“We are going to take the powers to make sure that we can quarantine people if they are a risk to public health, yes, and that’s important,” he told The Andrew Marr Show on the BBC.
“I doubt that actually we will need to use it much, because people have been very responsible.”
The Health Secretary said a Bill setting out emergency powers to deal with the outbreak will be published on Thursday, and details of what the powers will include will be shared on Tuesday.
He said ministers are yet to make a decision on whether to ban gatherings of more than 500 people in the rest of the UK, after Scotland said it would bring in restrictions from Monday.
The Government is in talks with private hospitals about the possibility of taking over beds, in a further sign of the pressures that will face the health service at the peak of the coronavirus outbreak.
There could also be a shift to household isolation rather than individual self-isolation.
Negotiations are also taking place with private health firms about access to their hospital beds.
Other measures, including school closures, have also been considered as an option to combat the spread of the virus.
Mr Hancock was pressed on when ministers would publish their modelling so the public can assess the scale of the outbreak and scrutinise the Government’s response.
“Our scientists are extremely busy and we’re working incredibly hard, but we will do that in the next couple of days,” he said.
