Nicola Sturgeon has announced a ban on travel into Scotland from the rest of the UK.
The first minister also said the toughest level of coronavirus restrictions would apply across Scotland for three weeks from Boxing Day.
A planned easing of household mixing will now only take place on Christmas Day, she added, urging Scots to “only use this flexibility [to see loved ones] if you really need to”. Ms Sturgeon advised people not to meet other households at all if they could help it, though the law will permit eight people from three groups to meet.
Leaders across the country are cracking down on movement in the face of surging Covid-19 cases and a virulent new strain of the disease.
Ms Sturgeon told a briefing on Saturday: “In order to reduce the risk of more of the [coronavirus] strain being imported into Scotland, we intend to maintain a strict travel ban between Scotland and the rest of the UK.
“Unfortunately, and I am genuinely sorry about this, that ban will remain in place right throughout the festive period.
“We simply cannot risk more of this new strain entering the country if we can possibly avoid it. That means people from Scotland not visiting other parts of the UK, and vice versa.
“Cross-border travel for all but the most essential purposes is not permitted.”
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UK news in pictures
19 December 2020
Prime Minister Boris Johnson speaks during a news conference in response to the ongoing situation with the coronavirus disease pandemic, inside 10 Downing Street, London. He announced London and southeast England set for tier 4 rules with Christmas bubbles canceled
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18 December 2020
Actors from the Wintershall Estate perform an adaptation of their traditional Nativity play on December 18, 2020 in Guildford, England. The Wintershall Estate have adapted their traditional Nativity play to accommodate the Coronavirus pandemic restrictions and this year it takes the form of a walk through the estate set in the Surrey Hills. Walkers will enjoy beautifully staged mini-tableaus from the Nativity story, performed by a cast of volunteers with a full complement of sheep, cows and horses
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17 December 2020
People walk through Ashford in Kent as Tier 3 restrictions are planned for large areas of England
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16 December 2020
A dog retrieves a hard hat from flood water in Sutton in Cambridgeshire, as the Met Office have warned the next couple of months are likely to be wetter than normal in the UK, raising the prospect of flooding
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15 December 2020
Queens Park Rangers fans cheer on their side in the stands during the Sky Bet Championship match at the Kiyan Prince Foundation Stadium, London
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14 December 2020
An empty restaurant in the West End of London after the announcement that the capital and parts of Essex and Hertfordshire will face Tier 3 restrictions from Wednesday following a rise in coronavirus cases
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13 December 2020
Lobsters are processed at the fishing port at Bridlington Harbour in Yorkshire, after European Commission president Ursula von der Leyen said she and Boris Johnson had agreed to continue negotiations on a post-Brexit trade deal
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12 December 2020
Shoppers on the streets of tier 3-restricted Birmingham ahead of Christmas
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11 December 2020
People take pictures of a new street artwork entitled ‘Aachoo!!’ by Banksy in Totterdown, Bristol
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10 December 2020
Wollaton Hall in Nottingham which has been transformed into an enchanted light experience to create Christmas at Wollaton Hall, a unique, socially distanced festive outdoor light installation
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9 December 2020
British Prime Minister Boris Johnson adjusts his face mask as he meets European Commission President Ursula von der Leyen in Brussels
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8 December 2020
Margaret Keenan, 90, is applauded by staff as she returns to her ward after becoming the first person to receive the Pfizer-BioNtech Covid-19 vaccine at University Hospital in Coventry
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7 December 2020
Amanda McGurk (left) and Cara McCann outside Belfast City Hall after becoming the first couple in Belfast to convert their civil partnership into a marriage. From today same-sex couples across Northern Ireland are able to marry through the official conversion of existing civil partnerships following a change in the law
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6 December 2020
Shoppers on Oxford Street in London on the first weekend following the end of the second national lockdown in England
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5 December 2020
Swimmers wearing fancy dress take to the water for a charity ‘fancy dress chilly dip’ swim in the sea at Leasowe Bay, northwest England. The event was held to raise money for the Age UK charity and involved participants from an open water swimming club
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4 December 2020
The sun sets behind the Palace of Westminster, the home of the Houses of Parliament in central London
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3 December 2020
The finishing touches are put to a 40ft Christmas Tree at Somerset House in London
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2 December 2020
A swimmer takes to the water at Serpentine Swimming Club after the second national lockdown ends in England. A strengthened tiered system of restrictions has been introduced
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1 December 2020
Artic Fox, Flo, investigates a stocking of treats in her enclosure as part of a Christmas enrichment programme at the wildlife conservation charity Wildwood Trust in Herne Bay, Kent
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30 November 2020
A man carrying a Christmas tree walks past a mural depicting a Saltire design in Leith, Edinburgh on St Andrew’s Day
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29 November 2020
Wolverhampton Wanderers’ Leander Dendoncker warms up before the Premier League match against Arsenal at the Emirates Stadium, London
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28 November 2020
Police officers wearing a protective face coverings speak with a protester during an anti-lockdown protest against government restrictions designed to control or mitigate the spread of the novel coronavirus, on Regents Street in London
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27 November 2020
Protesters from Peta animal rights group demonstrates against fox hunting in Westminster
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26 November 2020
A billboard displays a Manchester City Council message about the city’s Covid alert level
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25 November 2020
Chancellor Rishi Sunak visits the Imperial Clinic Research Facility at Hammersmith Hospital in London
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24 November 2020
Freight lorries queueing along the M20 in Kent waiting to access the Eurotunnel terminal in Folkestone
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23 November 2020
A palette of changing colours as the sky lights up before sunrise at St Mary’s Lighthouse in Whitley Bay, Tyne and Wear on the North East coast
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22 November 2020
Daniil Medvedev poses with trophy after winning the singles final during day eight of the ATP Finals at The O2 Arena, London
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21 November 2020
Members of the public walk through the city centre on the first day of tier four coronavirus restrictions in Stirling, Scotland. Over two million people in the West of Scotland are now living under the country’s toughest level of coronavirus restrictions, following the rules coming into place at 18:00 yesterday seeing the closure of non-essential shops must close, as well as pubs, restaurants, hairdressers, gyms and visitor attractions
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20 November 2020
The bronze statues of John and Cecil Moores, founders of the Littlewoods company, in Liverpool, with face masks on them as England continues a four week national lockdown to curb the spread of coronavirus
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19 November 2020
James Stunt arrives at Southwark Crown Court in London to give evidence in the trial of Justinas Ivaskevicius, 34, who is accused of stealing a 16.18-carat fancy yellow diamond from 38-year-old Stunt’s substantial Belgravia mews
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18 November 2020
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UK news in pictures
17 November 2020
People gather on the the Comedy Carpet in front of the Blackpool Tower waiting for the funeral cortege of entertainer Bobby Ball to pass on its way to Carleton Crematorium in Blackpool
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16 November 2020
Shipping companies and retailers have complained of delays in unloading arriving freight, with one ship told it could wait up to 10 days for a berthing slot
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15 November 2020
Rainbow over Gwrych Castle in Abergele, North Wales, where the new series of I’m A Celebrity…Get Me Out Of Here! is taking place
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14 November 2020
Hindu monks set up Diya lamps at the BAPS Neasden Temple, London, on this morning of Diwali
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13 November 2020
Dominic Cummings, special advisor for Britain’s Prime Minister Boris Johnson leaves 10 Downing Street
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12 November 2020
A surfer silhouetted against the waves at Tynemouth, near North Shields
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11 November 2020
People walk past the Tommy statue, officially named 1101, on Terrace Green by the seafront in Seaham, County Durham, on the anniversary of Armistice Day. Across the UK people fell silent in remembrance of the nation’s war dead, as the coronavirus pandemic limits public commemorations
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10 November 2020
Number 10 special advisor Dominic Cummings waits to be admitted to 10 Downing Street in London
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9 November 2020
A mural of the president of the United States, Donald Trump which has been painted on the side of Islington Mill arts hub in Salford, Manchester
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8 November 2020
Chelsea pensioners watch a Remembrance Sunday service from their windows at the Royal Hospital Chelsea
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7 November 2020
D-Day veteran Jim Healy, 95, from Manchester who is taking part in the Royal British Legion’s doorstep silence for Remembrance. Jim was a Corporal in the Royal Marines and was coxswain of a landing craft assault on June 6, 1944 and will observe the Two Minutes Silence on Sunday by standing on his doorstep
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6 November 2020
The sunrises over woodland in Ashford, Kent
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5 November 2020
Two men walk over a nearly deserted Westminster Bridge, in foggy conditions, at the start of a four week national lockdown for England
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4 November 2020
Laura Martindale, manager of The Rocket public house in Whiston, pours away spoilt beer that has gone off after the pub was placed into tier three and now faces a four week lockdown ahead of a national lockdown for England
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3 November 2020
An oast house surrounded by autumn colours in the morning sunshine near Hawkhurst in Kent
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2 November 2020
Large waves crash over the harbour wall in Newhaven, East Sussex, during strong winds
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1 November 2020
Shoppers queue outside Ikea in Batley, West Yorkshire, after Boris Johnson announced a new national lockdown will come into force in England next week
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31 October 2020
Boris Johnson announces new restrictions in No 10
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While it is not though to cause more severe illness than the original variant, its spread will heap yet more pressure on the NHS just as winter is looming.
“We simply cannot take the risk of this new strain travelling from other parts of the UK” into Scotland, Ms Sturgeon said.
She added: “Standing here saying this actually makes me want to cry … because I know how harsh this sounds. I know how unfair it is, but this virus is unfair.”