On Monday, King Charles and his siblings - the Princess Royal, the Duke of York and the Earl of Wessex - stood guard around their late mother's coffin in Edinburgh for 10 minutes.

Images showed the Queen's four children looking ahead or looking down, sometimes with their eyes closed.

Image source, Reuters

They'll do the same tomorrow at Westminster Hall at 19:30 BST, carrying on a tradition called the Vigil of the Princes.

It started in 1936 after the death of King George V, when his four sons King Edward VIII, Prince Albert (the future King George VI and Queen Elizabeth II's father), Prince Henry and Prince George stood vigil around their father’s coffin in Westminster Hall.

When Charles, Princess Anne and Princes Andrew and Edward performed the same mark of respect on Monday, it was only the third time the Vigil of the Princes had been carried out - the second being at the Queen Mother's funeral in 2002. Anne also became the first woman in history to take part - note its name containing the word "princes".

In Edinburgh, members of the public were allowed to continue filing past the Queen's coffin while the royal siblings stood vigil. Buckingham Palace hasn't confirmed if the same will happen at Westminster, but it's expected it will.

They're due to stand for slightly longer this time - 15 minutes instead of 10 - so anyone queuing at the right time may get to see the historic moment.

Image source, DCMS

The government's queue tracker to see the Queen lying in state has now introduced an "estimated queuing time" feature on its live YouTube feed.

Currently, the line is at least nine hours long and stretches along the south bank of the River Thames from Lambeth Bridge back to Bermondsey Beach.

It is thought to be approximately 4.2 miles (6.8km) in length.

• Here is everything you need to know about queuing for the lying-in-state

Ben Wright
Reporting from Westminster Hall

The contrast could not be more marked. After the bonhomie and chatter of the queues, the atmosphere suddenly changes when people arrive here in Westminster Hall.

The vast medieval space is silent, and from the top of the stone steps, people see Queen Elizabeth’s coffin for the first time.

Raised high on a plinth, draped with a Royal Standard, framed by four candles. At each corner, a guard – still and silent.

And filing slowly past on either side - the public.

Families with children. Those who have come on their own. The very old and the very young. All sharing a collective moment of private reflection.

Nothing is rushed. Many bow when they reach the late Queen’s coffin, others curtsy.

I saw one woman blow a gentle kiss.

But everyone takes a couple of seconds to pay his or her own personal tribute, before walking back out into the daylight. Many dab tears from their cheeks.

Chi Chi Izundu
reporting from the South Bank

Hazel Biggs from Bedfordshire met Michael Burke from Dublin in the queue.

Michael is slightly concerned that since the queue started in nearby Bermondsey, he might not make his flight home. He’s got 16 hours.

Michael has a bag filled with all the necessary information needed for queuing, including a print out of the official route and lots of information on the Queen.

Hazel said she met the Queen in around 2008.

She’s a Churchill Fellow and studies crime scene investigation, returning to the UK after travelling around the world learning how other countries do forensic science.

She’s just handed over her contact details to Michael for his friend who’s in the same field.

Heathrow Airport says it'll stop all flights for 15 minutes before the two-minute national silence which is being planned for noon on Monday, until 15 minutes after it has finished.

Flights will also be grounded during the afternoon, between 13:45 - 14:20 BST, when there'll be no arrivals to ensure quiet conditions for the procession of the Queen's hearse.

The London airport adds that there'll be no departures during the ceremonial procession via the Long Walk to Windsor Castle between 15:03 - 16:45 BST.

Aircraft will also operate at a reduced departure rate between 16:45 - 21:00 BST to minimise noise during the private family service in Windsor.

In all, around 15% of Heathrow's schedule for Monday will be disrupted.

A spokesman says: "As a mark of respect, operations to and from the airport will be subject to appropriate changes in order to avoid noise disruption at certain locations at specific times on Monday."

Image source, Reuters

The Prince of Wales has spoken of how yesterday's procession following the Queen's coffin from Buckingham Palace to Westminster Hall brought back memories of his mother Princess Diana's funeral in 1997.

Prince William, who was just 15 at the time, walked behind the coffin of his mother as it was carried to her funeral service at Westminster Abbey.

This afternoon, Prince William spoke to crowds outside Sandringham where people had come to lay flowers at the gate.

One of those in the crowd, Jane Wells, 54, from Lincolnshire, said: "I said how proud his mother would have been of him, and he said how hard it was yesterday because it brought back memories of his mother's funeral."

Caroline Barwick-Walters, 66, of Neath in Wales, added: "He told us how difficult it was yesterday, how it brought back memories of walking behind his mother's coffin."

Image source, Reuters

Sean Coughlan
BBC News, royal correspondent

Anyone who has lost someone will know how disorientating it can be, without having to deal with public pressure as well as private grief.

Since losing his mother, King Charles has had to fly to meet politicians and civic leaders around the UK, take calls from world leaders, while taking part in some emotionally draining ceremonies in the preparation for the Queen's funeral.

“There are many tired people. I think people who have worked with the King know just how resilient and hardworking he is,” says the King’s spokesman.

“Anyone who saw the King in Westminster Hall yesterday could see that he was reflecting and mourning for his mother, Queen Elizabeth II."

He adds: "Today his focus will be on state business and ensuring that state business is complete, before another busy travel programme.”

Image source, Getty Images

Defence Secretary Ben Wallace and Scotland Secretary Alister Jack have been standing guard over the Queen's coffin in Westminster Hall this afternoon.

The members of Prime Minister Liz Truss's cabinet were pictured dressed in dark uniforms, standing on the raised platform where the coffin is resting, while the late monarch lies in state.

Both politicians are members of the Royal Company of Archers, which functions as the monarch's bodyguard in Scotland.

The Queen's coffin is being guarded in Westminster Hall 24 hours a day by units from the Sovereign's Bodyguard, the Household Division or Yeoman Warders of the Tower of London.

Laura Gozzi
BBC Live reporter

Image source, .

Westminster Hall's ancient timber ceilings couldn’t feel further away than this residential corner of Bermondsey in south-east London.

This is where the back of the queue seems to be forming this afternoon - there's a stretch between Southwark Park (the official start of the queue) and where I am that's empty. A marshal has just told me the wait from here is about nine or 10 hours.

This part of the River Thames path is usually quiet and a steward mentions that the manager of a local company nearby has complained about the crowds distracting his employees.

But although they are many miles away from the solemnity of Westminster, people streaming through are already speaking in hushed tones.

Most are in groups of two or three and the majority are dressed in black.

Angela and Linn have just arrived from Manchester and are carrying camping chairs and bags of snacks.

They know they are going to be queuing until well in the night but say they are prepared to wait.

Image source, PA Media

Back to Glasgow for a moment, where Princess Anne has met with the city's Lord Provost, councillor Jacqueline McLaren.

The Princess Royal also chatted to mourners outside the City Chambers in George Square.

Accompanied by her husband Sir Tim Laurence, she chatted to well-wishers and accepted a bouquet of flowers from a young girl.

Some people said the princess had thanked them for their sympathy.

Princess Anne then went inside to meet representatives of a number of organisations of which the Queen was patron.

Princess Anne will also visit the Scottish Borders to meet residents and staff of Waverley Care Home, pupils from Galashiels Academy and local carers and veterans.

Thomas Mackintosh
BBC Live reporter

Image source, .

The queue stretches along the Thames as far as the eye can see, with Southwark Bridge in the background. It’s quite a stagnant queue - every so often people pace forward quite quickly before slowing down to a brief standstill.

Many people know they are in this for the long haul - with an estimated eight hours or so still left from this point.

But there are refreshments on hand from shops along the south bank and a kiosk has popped up outside the Tate Modern, which features some portraits of the Queen.

Opposite Shakespeare’s famous Globe theatre I meet Sue Braithwaite and her daughter Jane who travelled down from Preston this morning.

“We joined the back of the queue around London Bridge [two hours ago] but it feels like we’ve constantly been on the move.

"We feel we had to be here to pay our respects. We always watched the Queen’s speech and she’s been a constant in my life.”

Image source, PA Media

Sean Dilley
reporting from Westminster

Tracey from Linlithgow in Scotland has a mobility impairment, so has joined the accessible route at Tate Britain - which is separate to the line stretching along the south bank of the Thames towards Tower Bridge.

She told me how she attempted to join the access queue last night, but she felt there had been communication difficulties with officials.

In the end, Tracey gave up and came back today when she said the kinks had been ironed out.

It took her less than an hour from picking up her yellow access queue, to paying her respects to Queen Elizabeth II and finally exiting Westminster Hall.

Inside Westminster Hall those joining the access queue are able to visit step free.

Thanks for joining our live coverage of events following the death of Queen Elizabeth II.

Here's a recap of what's been happening today:

• Further details of the Queen's funeral have been revealed
• The event will start at 11:00 BST in Westminster Abbey on Monday 19 September and will be attended by around 2,000 people
• A period of two minutes' silence will be observed nationwide before the conclusion of the service in London at noon
• The Queen will then be taken west to Windsor Castle for a smaller service with 800 people, before a further private service for family members
• Elizabeth II will be laid to rest in the evening in a royal vault alongside her husband, the late Duke of Edinburgh

• Tens of thousands of people from across the UK and around the world are queuing to see the Queen's coffin on the first full day of her lying-in-state in Westminster Hall
• The line is currently 4.4 miles (7km) long and finishes near Bermondsey Beach in south-east London
• Senior royals have today viewed tributes to the Queen: The Prince and Princess of Wales have met the public at Sandringham, the Earl and Countess of Wessex have been in Manchester, and the Princess Royal travelled to Glasgow

We've been hearing from many people who are waiting to view the Queen lying in state and leaving tributes around the country - but of course not everyone feels so strongly.

BBC News spoke to a group of people in York to get their views and here's some of what they had to say:

Tony Brown
reporting from The Mall

People have already started taking up their positions to see the funeral procession for the Queen on Monday - the day of her state funeral.

Crowds are expected to gather along The Mall to watch the procession and Bernadette Christie from Alberta, Canada, is already there - she arrived at 23:00 last night.

She says she booked her flight moments after the Queen died.

“She was such an amazing woman. She stuck to her word, she was the meaning of commitment. We don’t have enough of that these days.

“She was an extremely good, kind, human being,” she says.

Thomas Mackintosh
BBC Live reporter

Image source, .

On Queen’s walk, next to HMS Belfast - the historic warship that is anchored here - the pavements are wide, the queue feels spacious and the atmosphere’s calm.

Under grey skies, volunteers are on hand to direct people. I’ve seen one person clutching a bouquet of flowers, while many more have cups of coffee in hand.

Some are reading books while they wait and others are watching the government tracker to see how long they’ll have to wait. Police officers - not just from the Met - are also patrolling.

Richard Morris, an army veteran, has travelled down from Chester.

Image source, PA Media

As further details on the Queen's funeral are announced, senior members of the Royal Family have been visiting various corners of the country to view tributes to the late monarch.

Image source, PA Media

Image source, EPA-EFE/REX/Shutterstock

Image source, PA Media

Image source, Joe Giddens/PA Wire

Image source, Reuters

Image source, Getty Images

Senior members of the Royal Family will again accompany the Queen's coffin as it goes from Westminster Hall on Monday morning to Westminster Abbey, in the minutes immediately before the funeral service starts.

King Charles III will walk with his sister, Princess Anne, and brothers, Princes Andrew and Edward.

As we saw on Wednesday with the procession from Buckingham Palace to the lying-in-state, they will be followed by Princes William and Harry, and Princess Anne's son, Peter Phillips, and other senior male royals.

After the funeral, there will be another procession, with the carriage and the family walking past Buckingham Palace and up Constitution Hill to Wellington Arch.

Image source, PA Wire

The carriage that will carry the Queen's coffin to Westminster Abbey on Monday has a rich history of its own.

It's a field gun carriage that the Royal Navy has been looking after since 1901. It was taken out of active service for Queen Victoria's funeral in February that year - she was Queen Elizabeth II's great, great-grandmother.

The carriage was also used at the Queen's father's funeral, and at the funeral of the Queen's first prime minister, Winston Churchill, who died in 1965.

It will be drawn by what are called Naval Ratings, 142 Navy service personnel. The route from Westminster Hall to the abbey will be lined by more members of the navy and the Royal Marines.

Image source, UK Parliament

Further details, like the order of service and any more personal touches for the Queen, have not yet been released. We might get the order of service on Sunday.

But we know that the Queen was consulted on all the plans, and that her piper will pipe at the service at St George's.

And we know that the Crown Jeweller will be in attendance to collect the crown - which we've seen on top of the Queen's coffin while she lies in state - and take it back to the Tower of London.

You can see our guide to everything we do know, here.