Newspaper headlines: Lockdown rules latest and Johnson's bike ride

Police will now move "much more quickly" to challenge and fine people flouting coronavirus restrictions, according to the Times.

It leads on its interview with the UK's most senior police officer, Dame Cressida Dick. The Metropolitan Police Commissioner tells the paper it is "preposterous" that anyone could be unaware of the need to follow lockdown regulations.

In an opinion piece, Dame Cressida also argues that police officers should be given a higher priority for Covid vaccinations because of their constant interaction with the public.

The Guardian's front page takes a different tone - reporting that police have "set themselves up for a conflict with ministers" by insisting they will not enforce mask-wearing in supermarkets.

Major stores have said they will require police assistance to ensure compliance from customers.

Unnamed sources tell the paper the government is considering telling people to wear masks outdoors, and banning anyone from exercising with another person from outside their household.

The Daily Mail says scientists are urging the government to bring in what it calls a "dramatic" social distancing measure. Its headline asks: "Are we heading for the 3 metre rule?"

According to the paper, leading members of the Sage advisory panel want the social distance measure extended, but a Downing Street spokesman tells the paper there are "no plans" for a change.

The Metro invokes the wartime slogan "careless talk costs lives" to reinforce the government message that people should stop "mingling" with friends in shops or while exercising.

It says there is a threat of the lockdown getting "tougher" if people don't act more responsibly.

In its editorial, the Times urges people to stay home.

It suggests that if the prospect of falling ill while hospitals are overwhelmed does not focus people's minds, it is "hard to imagine what will".

It argues that people need to take individual responsibility, but adds in regards to exercise: "It would be helpful if the prime minister could set a better example by not travelling seven miles across London for a bike ride".

The Daily Mirror's front page also has a picture of Boris Johnson on a bike ride in a park seven miles from his home.

The paper accuses him of causing confusion about what is considered "local" exercise.

No 10 tells the paper he's done nothing wrong, but the Mirror criticises Downing Street for failing to clarify the rules. The paper's headline is: "Just get a grip".

The Daily Star describes the PM as a "clown" and has mocked up a picture of him in a stripy costume, with a red nose, and riding a tiny bike.

The Daily Telegraph and the i newspaper both report that the vaccination programme is under pressure to provide Covid jabs 24 hours a day - to meet the government target of immunising 15 million people in the most high risk groups by the middle of next month.

The Telegraph reports there has already been some confusion, with health officials "hastily rewriting" invitation letters to the elderly.

The paper says they caused a panic by not making it clear that people who could not travel to a large site could still get the jab from their local GP at a later date.

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The Daily Telegraph highlights a "blacklist" published by the Royal Mail - showing areas of the country which no longer receive regular deliveries because of coronavirus.

The paper says tens of thousands of people in 28 locations are only getting a limited service because of staff sickness.

These include Leeds and large parts of London and south east England. The Telegraph says some residents claim not to have received any post for a month.

According to the Financial Times, shoppers in Northern Ireland are facing empty shelves because of Brexit snags.

It reports that supermarkets are struggling to get fresh fruit, vegetables and chilled meat because of delays in the supply chain.

The FT says Marks and Spencer, Tesco and Sainsbury's are all struggling with the customs paperwork since the transition period ended on the first of January.

Meanwhile, in another Brexit story, the Guardian is among the papers highlighting one unexpected downside.

It tells how customs officers in the Netherlands are stopping UK drivers and confiscating ham sandwiches - as meat, dairy and other food products can not be brought into the EU.

A Dutch TV crew has footage of a bemused motorist asking if he can keep the bread - but the official replies: "No everything will be confiscated. Welcome to Brexit."

The Daily Mail's headline sums it up as being "ham-bushed".