King Charles and Queen Camilla are making their way along The Mall.

They are travelling in an Ascot Landau carriage, which was purchased during the reign of Queen Victoria.

The King is wearing the uniform of the Grenadier Guards, which is the regiment trooping the colour today. His uniform features the cypher of Queen Elizabeth II as he was personal aide-de-camp to his mother - the honorary position is only held by members of the Royal Family with military rank.

The King is also wearing a number of medals - ranging from Queen Elizabeth II's Coronation Medal (1953) to the Platinum Jubilee Medal (2022).

Queen Camilla is wearing a red, silk crepe, grenadier guards uniform dress designed by Fiona Clarke, along with a black beret featuring a white plume and grenadier guards cap badge designed by Phillip Treacy, and a grenadier guards brooch.

The first carriage travelling in the procession today is carrying the Duchess of Edinburgh, wife of the Duke of Edinburgh, and Vice-Admiral Sir Tim Laurence, husband of the Princess Royal.

The second carriage includes the Duke of Gloucester, first cousin to Queen Elizabeth II, and his wife, the Duchess of Gloucester.

Next will be the Prince of Wales, the Princess Royal and the Duke of Edinburgh, all on horseback.

The Princess of Wales will follow in an Ascot Landau carriage.

Lastly will be King Charles and Queen Camilla, in another Ascot Landau carriage.

Tinshui Yeung
Live reporter, at The Mall

Image source, Tinshui Yeung/BBC

The festivities have begun.

Troops are marching at The Mall to the sound of military music, while people raise their mobile phones as if saluting the flags and soldiers.

Children are shouting, with a few lucky ones perched on their parents’ shoulders.

Some adults have climbed on to the railings for a better view.

In front of me, two women with Union Jacks around their necks sit quietly and watch.

The BBC's live television coverage of Trooping the Colour is getting under way now with correspondents along The Mall and outside Buckingham Palace.

You can watch all the action on BBC One and BBC iPlayer, or click watch live at the top of this page.

Image source, Getty Images

The Prince and Princess of Wales have been pictured arriving at Buckingham Palace ahead of the parade.

They are accompanied by their children Prince George, Princess Charlotte and Prince Louis.

Simon King
Lead weather presenter, BBC Weather

The weather looks ideal for Trooping the Colour, with lots of sunshine developing in central London through Saturday morning and temperatures rising to 21C.

Trooping the Colour hasn’t been cancelled due to the weather since 1948 when severe storms were forecast - but never materialised - and so we’ve often seen the parade take place regardless of pouring rain or scorching heat.

An RAF flypast is more susceptible to weather conditions where cloud, wind and poor visibility can result in certain aircraft not taking part in a scaled-down formation.

However, weather won’t be a problem for the RAF this year.

Tinshui Yeung
Live reporter, at The Mall

Image source, BBC/Tinshui Yeung

"It's important to bring him and her and show them what's going on," Tim from Leicester tells me, pointing at his two young children.

He says that for him, the Royal Family means a lot, and he is glad he can see them today.

"Historically, they are very important to us," he says. "It's much better than having a president."

Image source, BBC/Tinshui Yeung

Meanwhile, Owen's family from Hertfordshire have also brought him all the way to Buckingham Palace for the event.

He tells me he is a "big fan" of the Royal Family, but his heart also soars for aviation.

"I like Spitfires and Lancaster bombers," he says.

The moment he is most looking forward to - no surprises here - is when the Royal Family appears on the balcony for the flypast.

As a reminder, both the King and the Princess of Wales have received cancer diagnoses in recent years.

In January last year, Catherine revealed she was in remission after being diagnosed in 2024 and temporarily stepping back from public life.

Earlier this month, she visited a specialist cancer unit in Manchester and was seen hugging a young mother who had completed her course of chemotherapy.

King Charles, meanwhile, shared back in December that his treatment would be reducing this year following an early diagnosis and "effective intervention".

The types of cancer they were diagnosed with have not been publicly revealed.

Daniela Relph
Chief royal correspondent, reporting from The Mall

This will be the fourth official birthday parade for the King as monarch.

He attended his first Trooping the Colour when he was three years old in 1951.

He no longer takes part on horseback as he did for decades as Prince of Wales.

The King is now 77 and living with cancer so we will see him today travelling in a carriage with Queen Camilla.

Trooping the Colour will be broadcast live on BBC One from 10:30 BST.

The ceremony's official website, citing the Radio Times, says the BBC first broadcast the event live on radio in 1926.

The first live BBC television broadcast of Trooping the Colour was in 1939 and the second in 1947.

Since 1949, the BBC has broadcast the event annually - with the exception of 1955, when the parade was cancelled due to a railway strike.

Sarah Campbell
Royal correspondent, reporting from The Mall

National and international media have set up opposite the palace.

As far as pomp and pageantry are concerned, Trooping the Colour has it all - as well as the Royal Family!

And that makes it of huge interest to global audiences.

Image source, BBC/Sarah Campbell

Image source, Reuters

The Trooping the Colour route begins at Buckingham Palace before processing along The Mall to Horse Guards Parade and returning to the palace.

An online ballot , externalfor tickets for the seated stands on Horse Guards Parade closed in late March, but big crowds are expected to line the edges of St James's Park and The Mall to watch the spectacle.

Members of the Royal Family gather at Buckingham Place for the RAF flypast at 13:00 from the iconic Red Arrows.

It's a moment usually met with cheers from thousands of onlookers.

Image source, Reuters

Tinshui Yeung
Live reporter, at The Mall

Is it just coincidence? I’m trying to talk to people at random - and the second one I meet is also from the US.

Karenna Tinnion from Mississippi tells me she’s in the UK primarily for Harry Styles, who is currently performing a record-breaking run of shows at Wembley Stadium.

She says that in the US "we always idolise the Royal Family".

She grew up watching Prince William and Catherine get married, and carry their children out of hospital.

So now she’s very excited. "I am hoping to see a few members of the Royal Family pass by. Fingers crossed... I will get to see at least one member of the family, right?"

Image source, BBC/Tinshui Yeung

Image source, PA/BBC

As part of the celebrations for the King's official birthday, we've also seen the release of the annual King's Birthday Honours list.

Rugby league star Kevin Sinfield, who has raised millions of pounds for charities tackling motor neurone disease after his teammate Rob Burrow was diagnosed with the condition in 2019, is knighted.

Children's authors Malorie Blackman and Julia Donaldson are made dames.Their best-known works - The Gruffalo and Noughts & Crosses - have both been adapted for the screen.

Peter Lord and David Sproxton - the founders of Aardman Aninmations, the studio behind Wallace & Gromit and Chicken Run - are also knighted.

You can read more about who has been honoured in our story here.

Sarah Campbell
Royal correspondent, reporting from The Mall

The large Royal Standard used for ceremonial occasions is now flying above Buckingham Palace.

This is the personal flag of the monarch, and is flown when the King is present at royal residences.

Image source, BBC/Sarah Campbell

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Lt Col Charles Foinette will be leading the parade during today's Trooping the Colour.

The brigade major tells BBC Breakfast that regiments taking part in the procession have been left "sunburned" and "nearly drowned" during rehearsals as the weather seesawed over the past week.

But he says today's conditions are "as good as it gets".

Col Foinette explains that he will be focused on getting his timings exactly right during the ceremony and holding his strong-willed horse back.

"We get on quite well but one has to keep a little bit of an eye on what they're up to," he says.

Col Foinette also points out that the troops on parade are fighting soldiers and carry the rifles they fight with during the event.

"It is not unusual for soldiers to be crawling up a rainy ditch in South Wales and the next day having scrubbed the mud off their weapons, be on parade to change the guard. That is normal for us."

Tinshui Yeung
Live reporter, at The Mall

Hello from The Mall - I’m soaking up the sunshine here and I hope you’re out there enjoying this beautiful day, too.

It’s still over an hour until the event kicks off, but people are already gathering.

I’ve just spoken to Corrigan Gommenginger, one of the first to arrive. He told me he was here at 04:00 today. And yes, he’s come all the way from Seattle, Washington for the event.

"I love the royal family. They do a lot of great things for the country. They inspire people to do good things for humanity and for the world," he says.

No surprise at his enthusiasm - this isn’t his first royal rodeo. He got his crown back at the coronation a few years ago.

"I'm hoping to see the royal family and their carriages, and the horses, and the military today," he tells me.

Image source, BBC/Tinshui Yeung

Sarah Campbell
Royal correspondent, reporting from The Mall

The balcony is officially dressed, and vacuuming is under way.

Image source, BBC/Sarah Campbell

Image source, Reuters