At Windsor Castle, the crowds who came to pay their respects to Queen Elizabeth II were surprised when William and Catherine, the new Prince and Princess of Wales, appeared through the gates with Prince Harry and Meghan.

Together, they viewed tributes left for Britain’s longest-ever reigning monarch and greeted the crowds.

It was the first time the four of them have been seen together in more than two years.

Prince William greets people outside Windsor Castle
ANDREW COULRIDGE / REUTERS
Britain's Prince Harry greets people as he walk outside Windsor Castle
PAUL CHILDS/REUTERS
Britain's Catherine, Princess of Wales, greets people outside Windsor Castle
PAUL CHILDS / REUTERS
The Duchess of Sussex meeting members of the public at Windsor Castle
KIRSTY O’CONNOR/PA

At Crathie Kirk, a church near Balmoral in Scotland, the Queen’s three younger children, Princess Anne, Prince Andrew and Prince Edward, were among the family members who viewed the floral tributes.

Princess Eugenie, the Earl of Wessex, Peter Phillips, the Princess Royal, Zara Tindall, Vice Admiral Timothy Laurence, Lady Louise Windsor and the Countess of Wessex view flowers
OWEN HUMPHREYS/PA
Lady Louise Windsor (R) Princess Beatrice of York (L) and Sophie, Countess of Wessex look at floral tributes
JEFF J MITCHELL / GETTY IMAGES

Her Majesty’s four granddaughters, Zara Tindall, Princesses Beatrice and Eugenie and Lady Louise Windsor, plus her eldest grandson Peter Phillips, were also there.

Lady Louise looking at the flowers outside Balmoral Castle
TIM ROOKE/REX/SHUTTERSTOCK

Earlier in the day, King Charles III was formally proclaimed king, following the death of his mother, Queen Elizabeth II, on Thursday.

Britain's King Charles III makes his declaration
JONATHAN BRADY/PA

King Charles dedicated the rest of his life to serving as monarch at the meeting of the Accession Council at St James’ Palace in London.

In his address, he paid tribute to the Queen and spoke of the “irreparable loss we’ve all suffered”.

King Charles III
VICTORIA JONES / POOL / VIA REUTERS

He was accompanied by his wife, Camilla, the Queen Consort, and the heir to the throne, Prince William.

Britain's Prince William, Prince of Wales (L), Britain's Camilla, Queen Consort (C) listen as Britain's King Charles III
JONATHAN BRADY / POOL / AFP

The ceremony was attended by political leaders including Prime Minister Liz Truss, who was only appointed into the role earlier this week.

Britain's Prime Minister Liz Truss
VICTORIA JONES/POOL/AFP VIA GETTY IMAGES

The Labour leader Keir Starmer was also there alongside former prime ministers Tony Blair, Gordon Brown, Boris Johnson, David Cameron, Theresa May and John Major.

Political leaders
KIRSTY O’CONNOR/POOL VIA REUTERS

The Proclamation of Accession was signed by a number of dignitaries, including Lord President of the Council, Penny Mordaunt, and Scotland’s First Minister Nicola Sturgeon.

Lord President of the Council Penny Mordaunt signs the Proclamation of Accession
KIRSTY O’CONNOR/POOL VIA REUTERS
Scotland's First Minister Nicola Sturgeon signs the Proclamation of Accession
KIRSTY O’CONNOR/POOL VIA REUTERS

Outside, Garter Principal King of Arms, David Vines White, read the Principal Proclamation from the balcony overlooking Friary Court.

Garter Principal King of Arms, David Vines White, reads the Principal Proclamation
JAMIE LORRIMAN/POOL VIA REUTERS

Prince Michael of Kent, Birgitte, Duchess of Gloucester, and Prince Edward, Duke of Kent, were seen together as the Principal Proclamation was read from the balcony.

Prince Michael of Kent, Birgitte, Duchess of Gloucester, and Prince Edward, Duke of Kent, sit together as the Principal Proclamation is read from the balcony
RICHARD HEATHCOTE/POOL VIA REUTERS

The Band of the Coldstream Guards saluted the proclamation.

The Band of the Coldstream Guards saluted the the proclamation.
TOLGA OVALI/ANADOLU AGENCY VIA GETTY IMAGES

Outside, members of the public listened to the proclamation.

Members of the public listen to the proclamation
DANIEL LEAL/PA

Gun salutes took place in Hyde Park and above at the Tower of London, as the Principal Proclamation was read.

The gun salute to mark the formal declaration of King Charles III as Monarch in the Tower of London,
TOLGA AKMAN /EPA-EFE

A second Proclamation was read at the Royal Exchange in the City of London. State Trumpeters led a procession which included the Lord Mayor as well as various City officers.

Outside the Royal Exchange
POOL VIA REUTERS

Officials and elected members of the City of London Corporation doffed their hats.

Officials and elected members of the City of London Corporation doff their hats
TOBY MELVILLE/PA WIRE
Outside the Royal Exchange
TOBY MELVILLE/PA WIRE

Following the ceremonies, King Charles III returned to Buckingham Palace. His coronation may not be for many months yet – some 16 months passed between the death of Queen Elizabeth’s father and her coronation in June 1953.

King Charles arrives at Buckingham Palace
HENRY NICHOLLS / REUTERS