Exercise outside the home could be banned if people ignore coronavirus social distancing rules, the health secretary has warned.
Matt Hancock told the BBC’s Andrew Marr that the government would “take action” if needed to control the virus.
It comes after reports of groups of people gathering in parks during sunny weather this weekend.
Meanwhile, the Department of Health said there were a further 621 deaths linked to coronavirus in the UK.
As of 09:00 BST on Sunday, 47,806 people had tested positive for coronavirus, the Department of Health said.
Speaking at the government’s daily briefing, Mr Hancock said following the rules on social distancing was “mission critical”.
He said the government was “not planning any changes imminently” but he “could not rule out further steps”.
“The more people follow the rules then the faster we will all be through this,” Mr Hancock insisted.
“So I say this to the small minority of people who are breaking the rules or pushing the boundaries: you’re risking your own life and the lives of others and you’re making it harder for us all.”
Mr Hancock offered his “profound sympathies” to the families and friends of those who have died.
He added: “I’ve lost two people that I was fond of so I understand what a difficult time this is for the country.
“We need perseverance in the face of great challenges.”
It comes as Brockwell Park in Lambeth was forced to close on Sunday after more than 3,000 people spent the day there sunbathing or in large groups on Saturday.
There were similar scenes on Primrose Hill in Camden on Saturday, when police moved on more than 100 people.
But local officers tweeted to say thank you after finding far fewer crowds in the area on Sunday.
And Brighton beach was nearly deserted on Sunday, following a warning by Brighton and Hove City Council that too many people were meeting up with friends on the seafront.
It prompted a tweet from Sussex police thanking the public for heeding government advice.
In Essex, local police echoed the sentiment, tweeting that “areas that would normally be busy on a sunny Sunday are not today”.
Mayor of London Sadiq Khan has warned London’s parks will be forced to close if Londoners do not follow the rules on social gatherings, and urged people to stay at home amid the warm weather.
The Met Office said some parts of the UK could see temperatures of up to 21C on Sunday, with blue skies and sunshine forecast for much of the day across the country.
Newly elected Labour deputy leader Angela Rayner told Sophy Ridge it was “all right for people who have got big houses and huge back gardens” to tell sunbathers observing social distancing to stop doing so.
“If you’re stuck in inadequate accommodation… and you’re all on top of each other, quite literally, then I think people should do social distancing and should keep their distance, but also be reasonable and proportionate about that,” she said.
Harriet Harman, MP for Camberwell and Peckham, has called for a rota for the use of public parks, writing on Twitter that families in flats with young children need green spaces during the lockdown.
Mr Hancock’s warning came ahead of the Queen’s address to the nation on Sunday, in which she will stress the value of self-discipline and resolve during the coronavirus pandemic.
In other developments:
- Prime Minister Boris Johnson, who remains in self-isolation in Downing Street after testing positive for coronavirus, continues to have a high temperature but is “OK”, Mr Hancock said
- The new Labour leader, Sir Keir Starmer, has accused the government of making “serious mistakes” in its response to the coronavirus
- Scotland’s chief medical officer has apologised “unreservedly” for visiting her second home in Fife during the lockdown
- The culture secretary is planning to hold virtual meetings with tech firms over their response to conspiracy theories linking 5G networks to the pandemic
- The Foreign Office said it is now working with 14 commercial airlines to help thousands of Britons still stranded abroad amid the pandemic, with seven charter flights to bring travellers home from India in the coming week
- Convenience stores on the outskirts of towns and in rural areas are experiencing a surge in sales – as people turn to them for essentials during the lockdown
- A drive-through coronavirus testing centre for frontline NHS staff is due to open at Glasgow Airport’s long-stay car park on Sunday afternoon
- A nursing assistant has died after looking after coronavirus patients at Watford General Hospital in Hertfordshire
- Lord Bath of Longleat has died at the age of 89 after contracting coronavirus
- The owner of London’s ExCel centre has U-turned on charging the NHS to use the site as a hospital
New Labour leader Sir Keir Starmer said the party would support the government it if decides to toughen lockdown measures.
“We’ve got to get through this and every time people break the guidance from the government they put other people at risk,” he said.
Prime Minister Boris Johnson, who is self-isolating after testing positive for coronavirus. tweeted his thanks to “everyone who is saving lives by staying at home this weekend”.
“I know it’s tough, but if we all work together and follow the guidance we will beat coronavirus,” he said.
Mr Hancock said that the number of ventilators needed over the coming weeks will be 18,000, and that currently there are between 9,000 and 10,000 within the NHS.
When asked about the number of nurses that had died of coronavirus, Mr Hancock said the latest figure was three deaths.
The Queen’s address will be broadcast on TV, radio and social media at 20:00 BST.
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