Image source, PA Media

Catherine, the Princess of Wales, is also travelling in an open carriage with her three children, George, Charlotte and Louis.

You can watch the ceremony by clicking Watch Live at the top of this page.

Image source, PA Media

King Charles III and Queen Camilla are now making their way along the Mall.

We are able to get a closer look at Royal Family members this year as they travel in open carriages due to the sunny weather.

As we've been reporting, Royal Family members taking part in the parade are wearing black armbands as a mark of respect to the victims of the Air India plane crash

Sean Coughlan
Royal correspondent, reporting from the Mall

Image source, PA Media

It's a picture postcard of a scene outside Buckingham Palace, with musicians on horseback, in elaborate uniforms, lining up for the parade.

They even seem to have colour co-ordinated the horses, with a row of white horses in between rows of black and brown horses.

Plumed cavalry are getting into place too, with the crowds holding up their phones to take pictures of the spectacle.

As a reminder, you can follow the BBC's live coverage - presented by Clare Balding - by clicking Watch Live at the top of this page.

We're just getting the latest images from central London of Royal Family members arriving at Buckingham Palace.

The Prince and Princess of Wales have been pictured arriving along with their children George, Charlotte and Louis.

Image source, PA Media

Hollie Cole
Reporting from the Mall

​​At the sound of trumpets and drums, I’ve just rushed toward the barriers to see things get under way.​​​​

There’s a sea of hands holding up phones, keen to capture the marching soldiers and music. Ambulance crews are stationed at several points along the pavement.

​​​​The ceremony is officially underway here on the Mall.

Remember you can follow along all of today’s events on this page by clicking Watch Live from 10:30 BST.

Hollie Cole
Reporting from the Mall

The stream of people arriving at the Mall isn’t ceasing as people try to navigate their way towards Buckingham Palace to get photos of the famous royal residence.​

​​While the street is lined with Union Jacks, there’s also a flutter of yellow flags in the air. ​​ ​​

They belong to a group of republican protesters who want the monarchy to be abolished. They’ve positioned themselves up against the low fences lining the pavement.

“Not my king” and “abolish the monarchy” are printed in black letters on their yellow flags and signs.

While today is an occasion for many on the Mall to get a glimpse of the Royal Family, these demonstrators are here to get their message seen, and heard, by people watching Trooping the Colour.

Image source, EPA-EFE/Shutterstock

Today’s pageantry kicks off at 10:30 BST at Horse Guards Parade, with the event’s route going along the Mall near Buckingham Palace before turning back.

If you’re heading down to central London, you might be able to get a view of the military spectacle by standing on the Mall or on the edge of St James’s Park overlooking Horse Guards Parade.

The event is due to finish at around 12:25 BST but there’s more to come afterwards - the Royal Airforce Flypast over central London will take place at 13:00 BST.

If you’re hoping to spot the royals, the flypast will be one of the best moments to do so as they traditionally stand on the balcony of Buckingham Palace to see it.

Stick with us for all of today’s big moments. You can also follow along by clicking Watch Live at the top of this page from 10:30 BST.

Sean Coughlan
Royal correspondent, reporting from the Mall

Image source, EPA

This will be a Trooping the Colour with a very different feel to last year, when there was feverish interest in the return to public life for Catherine, the Princess of Wales.

Trooping the Colour in 2024 had been her first public appearance of the year after her cancer diagnosis, and it was a moment that seemed full of uncertainty.

Catherine is now in remission and when she appears today the attention on her health will be much less intense.

King Charles is still receiving cancer treatment and will travel in a carriage, as he did last year, rather than riding on horseback.

But he seems to be well enough for a full diary of engagements and is recently back from what seemed to have been a very successful trip to Canada, where he showed support for a country feeling under pressure from US President Trump.

Hollie Cole
Reporting from the Mall

​​Like many coming to watch Trooping the Colour this year, I’ve just got off the Tube and walked through Green Park, which is near where the pomp and ceremony will be later this morning on the Mall.

​​ ​​Many people were wearing suits and floral dresses, and I saw one person walking along while carrying a portrait of King Charles. ​​ ​​

There's a sign outside the underground station warning people of a gun salute happening in Green Park later, and there’s lots of fencing that's been put up near where the park borders Buckingham Palace. ​​ ​​

However, there are still signs that it’s a normal Saturday in central London with plenty of runners and cyclists out as well as tourists taking in the sights.

Sean Coughlan
Royal correspondent, reporting from the Mall

The crowds are beginning to gather on the Mall, getting their places to watch the spectacle of this year's Trooping the Colour parade.

The Royal Standard is flying in a gusty breeze above Buckingham Palace.

The weather forecast looks much better than last year, when my abiding memory is trying to send back stories with rain dripping down the screen of my iPhone.

Sean Coughlan
Royal correspondent, reporting from the Mall

Image source, PA Media

King Charles has asked the Royal Family taking part in the Trooping the Colour parade to wear black armbands, as a mark of respect to the victims of the Air India plane crash, Buckingham Palace said.

The King requested a minute's silence, which will come after his inspection of the parade, in recognition of "the lives lost, the families in mourning and all the communities affected by this awful tragedy", a Palace spokesman said.

The King had sent a message of support soon after the news broke of the air crash, which claimed the lives of all but one of the 242 passengers and crew.

Flags have been at half-mast at royal residences and the black armbands will add another sign of respect, with the King having said he was "desperately shocked by the terrible events in Ahmedabad".

Coachmen and women on carriages in the parade are also likely to wear black armbands, along with those senior royals in military uniform in the parade, including the King and the Prince of Wales.

Those royals at the ceremony but not in uniform will probably not wear armbands.

Read more: Royals to honour air crash victims at Trooping the Colour

Image source, Reuters

It’s time to buckle yourselves in for the pomp and ceremony of this year’s Trooping the Colour - an annual military parade celebrating the monarch’s official birthday.

King Charles’ actual birthday is 14 November, but Trooping the Colour has marked the monarch’s birthday in June for more than 260 years.

This year it’s the Number 7 Company Coldstream Guards trooping their flag - also known as their “colour” - in the presence of the King, with more than 1,350 soldiers of the Household Division of the British Army expected to take part in today’s parade.

There’ll be music to march along to, royals to spot, and an RAF flypast zooming across the skies over central London near Buckingham Palace.

We’ve got the BBC's royal correspondent Sean Coughlan reporting from the Mall to bring you the latest updates on the ground.

Clare Balding will also present the BBC's live coverage when the military parade kicks off at 10:30 BST - you can follow along by clicking Watch Live at the top of this page.

Stick with us.