As celebrations for this year’s Trooping the Colour get underway, Republic protestors have taken to the streets of London.

Royal fans have drowned out Republic protestors’ chanting by singing along to the national anthem, it has been reported.

Lining the streets of London, protesters can be dimly heard chanting “Not my King” ahead of today’s Trooping the Colour. While Charles’s actual birthday is in November, Trooping the Colour has marked the ‘official’ birthday of the British monarch for over 260 years.

According to BBC’s royal correspondent Sarah Campbell, who is at Buckingham Palace: “[The crowds are] starting to build up… We’ve got some anti-monarchy protestors, so there have been shouts of ‘Not my King’ but other shouts of the national anthem so quite an atmosphere.”

Speaking about the protestors, who have made an appearance at various major royal events including the King’s Coronation last year, royal biographer Robert Hardman told the BBC host: “My first thoughts on seeing the Republic protestors is that’s a bit brave.

“It’s a free country, absolutely essential that everyone is allowed to have their say at any given time.”

It bears no secret that the protesters attending believe that there should have an elected head of state instead of a monarch, in the current climate, King Charles.

He added: “It’s always a significant minority who believe that we should have an elected head of state, that’s their view.

“As I say, they will be vastly outnumbered, but, you know, we are in a democracy.

As well as the King being in attendance, despite still undergoing cancer treatment, Queen Camilla will also be on hand to support her husband.

Prince William will also be joined by his wife and their three children, Prince George, 10, Princess Charlotte, 9, and Prince Louis, 6.

It was previously reported that it was unclear whether Princess Kate would be make an appearance due to her own ongoing cancer treatment. George, Charlotte and Louis were also previously expected to not make an appearance.

On Friday evening, a statement was publicly released from Princess Kate via Kensington Palace.

The statement, which gave an update on her health and confirmed her attendance at today’s event, read: “I have been blown away by all the kind messages of support and encouragement over the last couple of months. It really has made the world of difference to William and me and has helped us both through some of the harder times.

“I am making good progress, but as anyone going through chemotherapy will know, there are good days and bad days. On those bad days you feel weak, tired and you have to give in to your body resting. But on the good days, when you feel stronger, you want to make the most of feeling well.

“My treatment is ongoing and will be for a few more months. On the days I feel well enough, it is a joy to engage with school life, spend personal time on the things that give me energy and positivity, as well as starting to do a little work from home.

“I’m looking forward to attending The King’s Birthday Parade this weekend with my family and hope to join a few public engagements over the summer, but equally knowing I am not out of the woods yet…”