The King and Queen waved at crowds and watched a flypast at Buckingham Palace's balcony following a day of Coronation celebrations
They were joined by senior royals, including the Prince and Princess of Wales and their children - but Prince Harry was notably missing
The BBC understands Harry, who attended the coronation at Westminster Abbey, was not invited to appear on the balcony
Earlier, the King and Queen were crowned in a ceremony full of pageantry and symbolism
About 2,200 people, including the Royal Family, celebrities, faith leaders and heads of state, were there to witness the event
Thousands of people lined the streets of London to catch a glimpse of the King and Queen as they went past
Elsewhere, leading members of Republic, the anti-monarchy group, were among people arrested near Trafalgar Square
The congregation sings a hymn - and we have more photos for you as they do so.
Here's the moment King Charles III was formally crowned as monarch.
Image source, PA Media
Image source, PA Media
Image source, PA Media
Sean Coughlan
Royal correspondent inside Westminster Abbey
While Charles was always destined to be King and to wear the crown, who would once have been so sure that we’d be here watching Camilla being crowned?
It won’t be the Queen Consort any more.
We’re in the era of King Charles and Queen Camilla.
Queen Consort Camilla is now anointed and crowned in a simpler ceremony - although she is not asked to take an oath.
She’s crowned with Queen Mary's Crown.
Image source, PA Media
Alys Davies
Reporting from the Mall
The crowd on The Mall broke out in a chant of “God save the King”, accompanied by clapping and whooping, as the King was crowned in Westminster Abbey.
The ceremony is being broadcast over speakers along The Mall. The sound of corks being popped as people celebrate King Charles’ official crowning can also be heard.
Watch the moment King Charles III is crowned
During this musical interlude, let's look back at the exact moment when King Charles III was crowned a short time ago.
The archbishop invites people in the abbey - and those watching and listening at home - to pledge allegiance with the words: “I swear that I will pay true allegiance to Your Majesty, and to your heirs and successors according to law. So help me God."
Prince William pledges his loyalty to his father.
Traditionally, a succession of royals and peers would now pay homage by kneeling before the new king - swearing allegiance and kissing his right hand. But William is the only royal duke to do it this time.
This part of the ceremony sees the King take the throne.
The archbishop kneels before the monarch before pledging his faith to Charles III.
The King - escorted by the Archbishops of Canterbury and York and Bishops Assistant - is now being enthroned.
Sean Coughlan
Reporting inside Westminster Abbey
The literal crowning moment of the ceremony is reached as the Archbishop of Canterbury lowers St Edward’s Crown onto the head of King Charles.
All the talk about a coronation revolves around this moment, when that 17th-Century crown, a flurry of gold and jewels, is put upon the monarch’s head. It’s only used for this occasion, before returning to the Tower of London.
It’s about 30cm high and close up it looks slightly bigger than you might expect, an unmissable display of wealth. It holds 444 separate jewels and gemstones, including sapphires, rubies, amethysts and topaz.
There is a blast of sound to mark the moment, with the abbey bells being rung and gun salutes fired.
What does King Charles think at this moment? The last person to have experienced this was his mother, 70 years ago.
The crown we just saw placed on King Charles's head is named after a much earlier version made for the Anglo-Saxon king and saint, Edward the Confessor. It was made for King Charles II, who wanted a crown similar to the one worn by Edward but even grander.
Image source, .Another “God save the King” from the archbishop, and from the congregation.
The abbey bells ring, trumpets sound and gun salutes are fired across the UK.
Image source, PAThe archbishop places St Edward's Crown on the King's head.
It’s the only time Charles will wear it in his life.
We're just moments away from the key part of the day - the crowning of King Charles III.
The Archbishop of Canterbury has the St Edward's Crown in his hands.
We're now witnessing more presentations.
The Orb, representing the sovereign's power, is handed over by the Archbishop of Armagh.
More jewels and regalia are presented to the King
The Robe Royal is presented by Baroness Merron, who is representing the Jewish community.
Prince William gives him a garment known as the Stole Royal. It's the only new garment being used today.
The King is now presented with the Jewelled Sword.
The Archbishop of Canterbury tells him to use it to "do justice, stop the growth of iniquity, protect the holy Church of God and all people of goodwill".
A Greek choir now sings - an homage to the King's father.
While we hear from them, let's look more closely at the Coronation Chair, in which Charles is now sitting.
Also known as St Edward's Chair or King Edward's Chair, it's believed to be the oldest piece of furniture in the UK still used for its original purpose. A total of 26 monarchs have been crowned in it.
Image source, .Now we’re onto the investiture - which is the crowning moment, and one of great symbolism.
First, the King is given a shimmering golden coat to wear, called the Supertunica.
He sits in the Coronation Chair, and regalia are presented to him.
Image source, PAThe archbishop is pouring special oil from the Ampulla - a gold flask - on to the Coronation Spoon before anointing the King in the form of a cross on his head, breast and hands.
The Ampulla was made for Charles II's coronation, but its shape harks back to an earlier version and a legend that the Virgin Mary appeared to St Thomas a Becket in the 12th Century and gave him a golden eagle from which future kings of England would be anointed.
The Coronation Spoon is much older, having survived Oliver Cromwell's destruction of the regalia after the English Civil War.
Image source, .