Coronavirus news – live: Hancock rules out ditching support bubbles and tells shops to ban non-mask wearers

That’s all for our live coverage of the coronavirus pandemic for today. Thanks for reading.

Supermarkets should ban shoppers who refuse to wear face coverings, Matt Hancock says, as the Covid crisis continues to worsen.

The health secretary praised Morrisons for taking the strong action, telling a press conference: “That’s the right approach.”

Pre-departure Covid-19 testing for all inbound travellers to England will be mandatory from 4am on Friday, the Department for Transport has said.

Passengers arriving by ship, plane or train will have to provide evidence of a negative test up to three days before departure to the transport operator.

New arrivals will still have to quarantine for 10 days regardless of their test results, transport minister Robert Courts said.

British nationals attempting to return home who test positive must not travel, and must follow the local guidance in their host country.

Those travelling without a pre-departure negative test result will be fined a minimum of £500, while operators transporting non-compliant passengers will also be fined.

A police force has urged the public to reconsider making weekend trips after two "ill-equipped" walkers had to be rescued from a mountain.

The couple travelled from Rochdale in Greater Manchester to try and climb the summit of Ingleborough, the second highest peak in the Yorkshire Dales.

North Yorkshire Police said the man and woman were "incredibly fortunate" not to have been injured after they got into difficulty in poor weather on Sunday.

Officers also had to turn away numerous out-of-area visitors who had come "for a drive" or "to look at the snow", were called to several house parties and handed out dozens of fixed penalty notices.

Superintendent Mike Walker said: "We very clearly advised members of the public this weekend to stay at home and when taking exercise, stay local to stop the spread of Covid.

"Quite simply driving miles and miles, out of your village, town or city to visit an open space is not a necessary journey and is not acceptable.

"Neither is arriving at a challenging walking location, inexperienced and unprepared in treacherous weather conditions.

"By making an irresponsible and ill-informed decision, the safety of others, such as the Cave Rescue Organisation volunteers, is also put in jeopardy and if any injury resulted, pressure upon already stretched NHS resources."

Matt Hancock has ruled out removing the support bubbles relied on by many thousands of Britons during lockdown.

Fears that the bubbles might be outlawed was fuelled on Monday when Boris Johnson’s official spokesperson said that they were among lockdown measures which were being kept under “constant review”.

After Boris Johnson warned earlier today that tougher lockdown measures may be needed, the Daily Mail claims that scientists are urging the prime minister to extend social distancing from two metres to three metres. But would it make any difference?

Marcus Rashford has hit out at “unacceptable” parcels of free school meals sent out to children during lockdown.

The footballer retweeted a photo of one bag of food which a mother said was sent to her instead of £30 vouchers and commented: “Children deserve better than this”.

The Department of Education said it was looking into the issue, adding: “We have clear guidelines and standards for food parcels, which we expect to be followed. Parcels should be nutritious and contain a varied range of food.”

Portugal's president Marcelo Rebelo de Sousa has tested positive for coronavirus two weeks before he stands for re-election.

 His office said the 72-year-old has so far shown no symptoms. The presidential election is due to take place on 24 January.

A troop of gorillas at the San Diego Zoo has become the first in the world to test positive for the coronavirus.

The park's executive director, Lisa Peterson, said: “Aside from some congestion and coughing, the gorillas are doing well.”

Sitting on a park bench for a "short pause" during exercise is reasonable, but leaving the home just to sit in public is unlawful under coronavirus rules, Downing Street has said.

No10 was criticised earlier today after the prime minister's official spokesman was unable to confirm if a single person could sit down on a bench under the restrictions.

But a government source has now clarified that while a "short pause during the course of exercise would be reasonable", it would be "unlawful to leave the house just to sit in public".