Meghan and Harry seen arrving at Buckingham Palace

In another show of royal unity, Harry and Meghan have been pictured arriving at Buckingham Palace as the Queen’s coffin arrived.

The Queen’s coffin has arrived at Buckingham Palace where it was received by the royal family.

Prince William, 40, and Prince Harry, 37, were forced to put their well-publicised differences aside for the intimate and emotional gathering at the Queen’s home in central London overnight, which was also attended by King Charles, Prince Andrew, Kate Middleton and Meghan Markle.

After their clearly strained walkabout in Windsor on Sunday, which saw the newly minted Prince and Princess of Wales reunite with the Duke and Duchess of Sussex for the first time in two years, the “fab four” were yet again forced to put on a united front, however, this time it was behind closed doors.

Meghan, 41, and Harry, 37, were pictured looking sombre as they arrived at the palace via car.

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Harry and Meghan arrive at Buckingham Palace. Picture: Darren Fletcher/Mega

It’s understood no pictures were taken at the intimate gathering.

Princess Beatrice and her husband Edo Mapelli Mozzi, Princess Eugenie and Jack Brooksbank, Zara Philips and Mike Tindall, Princess Anne and Prince Edward were also at the private event.

Her Majesty’s coffin touched down at RAF Northolt shortly after 7pm (4am AEST) and was driven to the Palace, where she will spend one final night before lying in state at Westminster Hall.

As many as a million people are expected to file past her body between now and the morning of her funeral, on Monday.

The late monarch had been lying in state at St Giles’ Cathedral in Edinburgh for 24 hours, with 26,000 people passing by her body to pay tribute.

Harry and Meghan joined the Royal family. Picture: Guy Bell/REX/Shutterstock

Her coffin was then driven to Edinburgh Airport, from where it was flown to London, accompanied by Anne, the Princess Royal, and her husband, Vice Admiral Sir Timothy Laurence, on board an RAF Globemaster C-17.

As the coffin was carried off the plane, it was met by British Prime Minister Liz Truss and UK Defence Secretary Ben Wallace.

Princess Anne issued a poignant statement mid-flight, saying: “I was fortunate to share the last 24 hours of my dearest Mother’s life.

Pallbearers from the Queen's Colour Squadron (63 Squadron RAF Regiment) carry the coffin of Queen Elizabeth II to the Royal Hearse having removed it from the C-17 at the Royal Air Force Northolt airbase (Photo by Kirsty Wigglesworth / POOL / AFP)

Pallbearers from the Queen's Colour Squadron (63 Squadron RAF Regiment) place the coffin of Queen Elizabeth II into the Royal Hearse. (Photo by Ben Stansall / POOL / AFP)

Princess Anne, Princess Royal, and Vice Admiral Sir Timothy Laurence are greeted by Station Commander Group Captain McPhaden. (Photo by Kirsty Wigglesworth / POOL / AFP)

“It has been an honour and a privilege to accompany her on her final journeys.

“Witnessing the love and respect shown by so many on these journeys has been both humbling and uplifting.

“We will all share unique memories. I offer my thanks to each and every one who share our sense of loss.

“We may have been reminded how much of her presence and contribution to our national identity we took for granted.

“I am also so grateful for the support and understanding offered to my dear brother Charles as he accepts the added responsibilities of The Monarch.

“To my mother, The Queen, thank you.”

Pallbearers from the Queen's Colour Squadron of the Royal Air Force (RAF) carry the coffin of Queen Elizabeth II, draped in the Royal Standard of Scotland, into a RAF C17 aircraft at Edinburgh Airport. (Photo by Paul ELLIS / POOL / AFP)

Pallbearers carry the coffin of Queen Elizabeth II from St Giles' Cathedral in Edinburgh to a hearse to be transported to Edinburgh airport (Photo by Odd ANDERSEN / AFP)

The hearse carrying the coffin of Queen Elizabeth II leaves from from St Giles' Cathedral in Edinburgh. (Photo by LOUISA GOULIAMAKI / POOL / AFP)

Princess Anne, Princess Royal looks from the window of a car following the hearse carrying the coffin of Queen Elizabeth II. (Photo by Louisa Gouliamaki - WPA Pool/Getty Images)

Thousands packed the streets of Edinburgh as Her Majesty’s coffin, draped in the Royal Standard, left St Giles’ Cathedral.

Solemn mourners applauded as pallbearers placed the coffin inside the royal hearse, before the cortege slowly drove out of the city.

Roads along the route to the airport were lined with well-wishers hoping to catch a glimpse of the Queen’s coffin.

Even greater throngs of people were waiting for Her Majesty when she entered London, with traffic coming to a halt to watch as the Queen’s hearse paseed by..

The Queen’s coffin will be placed in Buckingham Palace’s Bow Room overnight, before being moved to Westminster Hall on Wednesday afternoon (UK time).

Members of the public will then be allowed to visit the Queen’s coffin as it lies in state for more than four days.

More than a million people are expected to file past the late monarch’s body, with visitors allowed in 24 hours a day.

In arguably the biggest security operation in Britain’s history, police will check bags and keep people moving as they queue for as long as 35 hours for a glimpse of the late monarch’s coffin.

King Charles III, Prince Edward, Princess Anne and Prince Andrew, Duke of York hold a vigil at St Giles' Cathedral (Photo by Jane Barlow - WPA Pool/Getty Images)

Charles’ historic visit

King Charles spent Tuesday in Northern Ireland, flying there from Edinburgh in the morning (UK time).

The new sovereign met well-wishers - including a corgi called Connie - outside Hillsborough Castle, the Royal Family’s home in Northern Ireland.

He met leaders from across Northern Ireland’s vast political divide, before giving a powerful speech about following his late mother’s “shining example”.

King Charles III meets a corgi called Connie in Belfast. (Photo by Niall Carson / POOL / AFP)

'Camilla, Queen Consort, and King Charles III meet with members of the public during a walkabout in Writers' Square in Belfast. (Photo by Niall Carson / POOL / AFP)

“On behalf of all my family, I can only offer the most heartfelt thanks for your condolences,” he told those gathered at the castle.

“I am here today at a time of great personal sorrow as we mark the death of my beloved mother, after a life most faithfully dedicated to the duty to which she had been called.

“It is fitting that we should meet at Hillsborough, which my mother knew so well, and in whose beautiful rose garden she always took such pleasure.

“In the years since she began her long life of public service, my mother saw Northern Ireland pass through momentous and historic changes.

“Through all those years, she never ceased to pray for the best of times for this place and for its people, whose stories she knew, whose sorrows our family had felt, and for whom she had a great affection and regard.

“My mother felt deeply, I know, the significance of the role she herself played in bringing together those whom history had separated, and in extending a hand to make possible the healing of long-held hurts.

The Queen died on Thursday aged 96 (Photo by LEON NEAL / AFP)

“At the very beginning of her life of service, The Queen made a pledge to dedicate herself to her country and her people and to maintain the principles of constitutional government.

“This promise she kept with steadfast faith. Now, with that shining example before me, and with God’s help, I take up my new duties resolved to seek the welfare of all the inhabitants of Northern Ireland.

“During the years of my mother’s reign, it has been a privilege to bear witness to such a devoted life. May it be granted to us all to fulfil the tasks before us so well.”

He also attended a Service of Reflection at St Anne’s Cathedral and met royal fans in Belfast’s city centre before flying back to London.