The BBC North East Scotland Twitter account has posted this video of people sledging at Westhill in Aberdeenshire.

Looks fun!

Although Stansted Airport has now reopened there will be a backlog of flights left over from the morning, so expect heavy delays.

Alongside the snow, the southwest of England and southern coasts of Wales have seen very strong winds.The Met Office report a gust of 82mph (131kp/h) In the Isle of Wight as the strongest so far.

A scenic view from Highgate in north London.

Heavy snowfall overnight has affected public transport in the capital, with buses being severely disrupted, some London Underground lines partly suspended and the Overground partially closed.

A fallen tree has blocked railway routes between Birmingham New Street and Cheltenham Spa.

Virgin trains are also being disrupted between Birmingham New Street and Birmingham International due to a signalling problem.

Manchester Airport is open but busy, as flights meant for other, closed, UK airports are diverted there.

The flight tracking website Flightradar has shown some flights meant for East Midlands and even Luton heading towards Manchester.

West Midlands Trains Ltd has advised people not to travel on Sunday.

It took over the franchise at 02:00 GMT on Sunday and on day one of its tenure said poor road conditions were preventing staff getting to work.

That is leading, it said, “to a significant amount of delays and cancellations throughout the day”.

Sam Maher has posted this photo of the view outside her window near Cadair Idris in north-west Wales.

You can send your photos to the BBC by emailing yourpics@bbc.co.uk or send them to WhatsApp number +447555173285.

For many children, this is their first snow day ever.

Alex photographed her daughter enjoying the wintry streets of North London: "It was an amazing moment. She's the happiest little girl ever!".

Qassim Qureshi's son also saw snow for the first time and built a snowman with his sister and neighbours after a snowball fight. "We all on the street had a fantastic time together. My kids and other kids were very excited and just cheered us all up on this Sunday morning," he said from London.

Image source, Alex M

Image source, Qassim Qureshi

Sam McCausland has built a "Snowkemon" in Hillsborough, County Down.

Impressive stuff, Sam!

More snow photos from Northern Ireland

Image source, Tracy Letters

Image source, Tracy Letters

Sennybridge, near Brecon, has seen a UK high: 30cm (1ft) of snow.

Almost 2,000 homes are without power across south and mid Wales, and there are six flood warnings in place on rivers across south and west Wales.

Many roads have closed, and trains, buses and planes are affected too.

Police are advising people not to travel unless absolutely necessary.

London Luton airport has said that it is re-opened for departures only after heavy snow disrupted flights to and from the airport this morning.

It advised passengers to check their flights status with their airline and allow additional time to get to the airport.

And there's disruption on mainline services.

Chiltern Railways have cancelled services between Birmingham Moor Street and London Marylebone due to the weather conditions.

The Severn Valley Railway has cancelled its Santa Steam Specials today after heavy snowfall. The rides normally take families by steam train from Kidderminster to Arley in the West Midlands to meet Father Christmas in a grotto.

In Aderdare, in South Wales, a Santa Run at Dare Valley Country Park was also called off.

Not everyone is enjoying the snow. It wouldn't be a snowy day without significant travel disruption. Here's the state of play:

• Some roads are closed especially in Wales and the West Midland, following collisions.
• Buses are suspended in the Midlands, Oxford and London.
• Airports including Bimingham and East Midlands have closed to clear their runways of snow, while Luton has re-opened. There are many flight delays elsewhere.
• Trains are delayed and disrupted in many areas between the West Midlands and London.
• Some London Underground lines are part-suspended, and the Overground is part-closed.

Basically if you're going anywhere not on skis or your own two feet, it's best to check Twitter and local radio for updates before you set out.

And what about tomorrow, when the work and school weeks start? The forecasters say it's still going to be cold, with some snow flurries and a risk of icy surfaces.

The cold weather didn't stop more than 8,000 people spent the night sleeping out in an Edinburgh park to raise money for homelessness as temperatures dropped to -5C.

Participants had to raise at least £100 in order to join the Sleep in the Park event in Princes Street Gardens.

Image source, Stuart Attwood

Liam Gallagher, Deacon Blue, Amy Macdonald and Frightened Rabbit performed short sets, while John Cleese read a "bedtime story".

Organisers Social Bite said the sleep out had already raised £3.6m.

In Bedfordshire police have also urged drivers to travel only if journeys are necessary.

In Derbyshire police say they have dealt with a number of crashes.

They are advising drivers to take extra care and only travel if necessary.

Image source, Derbyshire RPU