Londoners are facing a bitterly cold start to the week as Arctic air sweeps the UK in the wake of Storm Claudia.
The Met Office is predicting temperatures will rise no higher than 9C in the capital on Monday - with colder weather later in the week potentially bringing some wintry showers. The mercury fell to 5C in London overnight meaning early-risers had to endure a bitingly cold start their day.
And it is going to get considerable colder as the week goes on - with lows of 0C at night and 5C during the day on Thursday, bringing the possibility of sleet showers falling on London.
In fact widespread cold conditions and some wintry hazards are expected across the country this week.
The UK Health Security Agency has issued a cold weather warning for parts of the Midlands and northern England from Monday.
The alert is in place from 8am until 8am next Friday and covers the East Midlands, West Midlands, North East, North West and Yorkshire and the Humber.
Snow and ice are possible after what has been a spell of above-average temperatures, the Met Office said.
The UK recorded its coldest night since March on Saturday when temperatures dropped to minus 7C in Tulloch Bridge in the Highlands.
Met Office deputy chief meteorologist Dan Holley said: "As Storm Claudia retreats to the south, high pressure to the north west will drive a cold northerly flow from the Arctic across the UK.
"This will bring much colder conditions than of late and, whilst generally drier than recent days, there will also be a risk of wintry hazards, such as snow and ice.
"There will be widespread frosts across the UK, with temperatures dipping as low as minus 7C in places next week, and daytime temperatures staying in single figures across the country.
"Couple this with a brisk northerly wind, and there will be a marked wind chill.
"This will be a notable change in our weather after a prolonged spell of above-average temperatures. People should keep an eye on the forecast in their area as it is possible warnings may be issued for snow and ice at times."
RAC Breakdown spokesperson Alice Simpson said: "There's potential for freezing temperatures to make roads hit by heavy rain very slippery with a chance of ice.
"We expect breakdown volumes to be around 10% higher than what's normal for this time of year, which equates to around 1,000 more people needing our help each day.
"Normal indicators of autumn, like fallen leaves on the road, can also become very hazardous in icy conditions as they create an extra layer between tyres and the road surface, increasing the likelihood of skidding."