HALF a million people have taken part in the biggest demonstration ever against the far right, campaigners said.

Protesters sent a clear message to the organised far right, saying “No to racism, no to Trump” and “Refugees welcome” as they marched through the streets of central London from Park Lane to Whitehall on Saturday for the Together Alliance rally.

Together Alliance chairman Kevin Courtney told crowds  at Whitehall: “Our estimate is now that there are half a million people on this demonstration — the biggest demonstration ever against the far right.”

He was joined by musicians, actors, authors, politicians, trade unionists and campaigners, with MPs Hannah Spencer, Zarah Sultana, Jeremy Corbyn and Richard Burgon among the speakers.

MP Diane Abbott told the rally: “The turnout today is the largest anti-racist march that I have seen in my lifetime, and you should all be proud of yourselves for coming out in such numbers today.”

Joint secretary of the Together Alliance and co-convener of Stand Up To Racism Sabby Dhalu said Britain is seeing an unprecedented growth in support for far-right organisations. But the size of attendance on Saturday, she went on, had “intimidated the far right” from mounting a counterprotest.

“The Tommy Robinson-led Unite the Kingdom demonstration back in September 2025 was the biggest far-right mobilisation in British history,” Ms Dhalu said.

“We believe that the majority of British people stand against the hatred and division and racism that was being encouraged at that demonstration and by these types of organisations, and it’s time to act.”

Green Party leader Zack Polanski told the crowds: “The tide is turning.

There have been dark times. I know people have been scared, and we have been afraid, but days like this are here to send a message, a message to Tommy Robinson, to Nigel Farage, to those who appease them.

“The message is: when we turn up, in our hundreds, in our thousands, in our hundreds of thousands, we are unstoppable.”

NEU general secretary Daniel Kebede said some of those in power are “using racism to feather their own nests, highlighting that the “toxic climate that is taking place in society festers into schools.”

Mr Kebede added there has been “an increase in racist incidents, whether that’s directed towards teachers and support staff or pupil on pupil, so it’s incredibly difficult at the moment.”

A separate Palestine Coalition march took place alongside the Together Alliance, later joining the same route before the groups formed up for the rally at Whitehall.

Public order conditions were imposed on the protests by the Metropolitan Police, which banned the joint rally from going on after 5pm.

At least 25 people were arrested during the various demonstrations on Saturday, according to the Met. They include two people accused of climbing up the National Gallery columns  — and the 18 Palestine Action supporters who defied the ban on the proscribed group in front of the police headquarters.