Freezing Arctic air will bring the coldest day of the year so far to parts of the UK with warnings in place for snow and ice.
Chilly northerly winds will make the dip in temperature feel more like -4C in parts, according to forecasters.
The weather warnings in force for the start of next week cover northern and eastern parts of Scotland and northeast England, extending as far as Hull.
As a result, Monday will be the coldest day of 2023 so far for many parts of the UK.
Areas affected by the weather warnings could experience power cuts and travel disruption, while some rural communities may be cut off by the freezing conditions.
The warning will remain in place from early on Monday through to midnight on Thursday.
According to the Met Office, the wintry cold snap is due to “an Arctic maritime airmass” sweeping across the UK as an area of high pressure, responsible for recent milder conditions, moves away to the west.
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Senior meteorologist at the Met Office, Craig Snell, said: “Going into next week we do see a bit of a change with even colder air coming through and then an increase in risk of sudden disruption due to some sleet, snow and some ice.
“So at the moment, the main focus is across northern and eastern parts of the UK where we have issued warnings already for Monday and Tuesday for the risk of some snow showers moving in from the North.
“Highest accumulations will be across the high ground. But even at lower levels, we are likely to see some disruption in places as the showers come through.”
He added: “Scotland and some eastern parts of England have warnings going throughout Monday and Tuesday. In other parts of the country, we are keeping a close eye on it, there is a chance that we could see some snow further south as we kind of go through the week ahead.
“Some uncertainty still on where that snow is going to be because at the same time we will be seeing a milder air trying to come in from the Atlantic.
“So some places may well see some rain and other places may well see some snow.”
Dr Agostinho Sousa, head of extreme events and health protection at UKHSA, said: “During periods like this, it is important to check in on family, friends and relatives who may be more vulnerable to the cold weather, as it can have a serious impact on health.
“If you have a pre-existing medical condition or are over the age of 65, it is important to try and heat your home to at least 18C if you can.”
Temperatures are likely to stay well below average for much of next week, said the Met Office.
It comes after England had its driest February in 30 years.
The UK saw less than half of its average rainfall for the month, at 45%, with just 43.4mm.
Police are investigating after a “number of people” were believed to have been attacked with pepper spray by a group of men who then fled.
Officers were called at 8.11am to a multi-storey car park at Terminal 3 following reports of multiple people being assaulted, said the Metropolitan Police.
A statement by the force said: “A number of people were sprayed with what is believed to be a form of pepper spray by a group of men who then left the scene.”
What we know so far • Several assaulted with ‘pepper spray’ • One arrest – police hunt for more suspects • Incident said to involve people known to each other • Incident not being treated as terrorism • 21 people treated by ambulance service – five taken to hospital • Injuries not believed to be life-threatening • Traffic disruption reported – but train lines since reopened
Image: Fire engines responding to the incident at Heathrow Airport. Pic: @_umarjaved
Armed police attended and one man was arrested on suspicion of assault. He remains in custody and enquiries continue to trace further suspects.
Police are not treating the Heathrow incident as terrorism.
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London Ambulance Service also attended the scene and treated 21 people, including five who were taken to hospital. Their injuries are not believed to be life-changing or life-threatening.
There is currently some disruption to traffic in the area and Terminal 3 remains open.
Increased police presence
Commander Peter Stevens said: “At this stage, we believe the incident involved a group of people known to each other, with an argument escalating and resulting in a number of people being injured.
“Our officers responded quickly and there will be an increased police presence at Heathrow Airport throughout the morning, to continue enquiries and ensure the safety of those in the area.
“We are not treating this incident as terrorism. I understand the public’s concerns and would like to thank those in the area for their cooperation this morning.”
Image: A person is detained at the airport. Pic: @_umarjaved
‘Significant incident’
The London Ambulance Service said a “significant incident” was declared.
There was a “full deployment” of resources and the ambulance service is treating it as ongoing.
A London Fire Brigade spokesperson said: “We were called at 8.14am today to assist emergency service colleagues at an incident near Terminal 3 at Heathrow Airport. Firefighters remain at the scene.”
Heathrow is advising passengers to allow extra time when travelling to the airport and to check with their airline for any queries.
There was disruption to train and Tube services, with some delays on the Elizabeth Line and the Piccadilly Line.
National Rail said on its website that lines had been reopened allowing trains to call at Heathrow “following the emergency services dealing with an incident at the airport”.
It said: “Although lines have now reopened, disruption is expected to continue whilst services return to normal, delays of up to 10 minutes and cancellations can be expected until 11.45am.”
National Highways East said on X: “A serious incident within the @HeathrowAirport Tunnel has resulted in the closure of the #M4 spur road southbound between M4 and J4A.
“@metpoliceuk responding. We’ll keep you updated.”
It later said: “Incident has been resolved and all closures lifted on the #M4 southbound @HeathrowAirport spur road between #M4 and J4A.”
People on social media have reported vehicles were being searched at the airport.
A user on X said there was a “major backlog of cars unable to leave the vicinity or enter the drop-off zone” at Terminal 3.
In footage on X, several armed police were seen in a car park.
England and Scotland fans have found out where their World Cup group games will be played when the tournament kicks off in June.
England, who are in Group L, will begin their tournament against Croatia in Dallas at 4pm EST (9pm BST) on 17 June. They will then go on to face Ghana in Boston at 4pm EST (9pm BST) on 23 June and Panama in New Jersey, New York, at 5pm EST (10pm BST) on 27 June.
Scotland are in Group C, and their first match will be against Haiti in Boston at 9pm EST on 13 June (2am GMT the following morning).
They will go up against Morocco also in Boston at 6pm EST (11pm GMT) on 19 June and then Brazil in Miami at 6pm EST (11pm GMT) on 24 June.
Fans are expected to rush to sort their travel and accommodation plans now that they know where and when the matches take place.
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2:44
England and Scotland learn World Cup fate
Wales and Northern Ireland have yet to find out if they will qualify.
Wales must face a play-off against Bosnia and Herzegovina in Cardiff, then either Italy or Northern Ireland, if they are victorious.
If they beat these play-off opponents, they will secure their place in Group B alongside Canada, Qatar and Switzerland.
However, Northern Ireland will also be vying to guarantee their spot in the same group if they can beat Italy and then either Wales or Bosnia and Herzegovina.
This breaking news story is being updated and more details will be published shortly.
England are in Group L along with Croatia, Panama and Ghana. Their first match will be against Croatia, who beat them in the semi-finals of the 2018 World Cup in Russia.
Image: Pic: Reuters
Scotland’s first match will be against Haiti, in Group C.
Brazil and Morocco are the other Group C teams – both countries were also in the same opening group as Scotland in the 1998 World Cup in France.
Image: Trump and Infantino at the World Cup draw
Wales have yet to find out if they will qualify as they must face a play-off against Bosnia and Herzegovina in Cardiff, and then either Italy or Northern Ireland, if they are victorious.
If they can overcome these play-off opponents then they will secure their place in Group B along with Canada, Qatar and Switzerland. But Northern Ireland will also be vying and hoping to guarantee their spot in the same group if they can beat Italy and then either Wales or Bosnia and Herzegovina.
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1:20
‘Bring it on!’: Scotland fans react to World Cup draw
The Republic of Ireland also need to get through the play-offs first and are paired against the Czech Republic for their semi-final. Should Ireland win that match, they will need to beat either North Macedonia or Denmark to get to the finals where an opening group containing joint hosts Mexico, South Africa and South Korea awaits.