Met police insist on closing off section of Whitehall while US president meets Theresa May

Anti-Donald Trump protesters will be prevented from marching in front of Downing Street after police said the southern part of Whitehall should be completely closed off while the US president is meeting Theresa May.

Instead, a rally will be held nearby close to the women’s war memorial in front of a security barrier, at lunchtime on Tuesday. Protesters will then have to travel via Embankment to reach Parliament Square in the afternoon.

“There’s no way they would do this for any other leader,” said Michael Chessum, an organiser of the Together Against Trump event. “We’ve got the US secret service dictating what Londoners can and can’t do.”

Speakers at the lunchtime rally were still in the process of being finalised on Friday, but are scheduled to include Frances O’Grady, the TUC general secretary, and Caroline Lucas, the Green party MP, as well as members of the leftwing anti-Brexit group Another Europe is Possible.

The organisers hope Jeremy Corbyn will join those taking the platform at what is intended to be the high point of next week’s protests during Trump’s three-day visit. The Labour leader has already declined an invitation to Monday night’s state dinner at Buckingham Palace held in Trump’s honour.

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The president will remain in London on Tuesday and head to Portsmouth for D-day commemorations on Wednesday.

The Metropolitan police acknowledged they had a responsibility to ensure the right to lawful protest, but a spokesman added: “This needs to be balanced with the complex requirements of this policing plan.”

Q&A Itinerary: What will Trump be doing during his UK state visit? Show Hide After arriving in the UK on Air Force One on Monday 3 June, US president Donald Trump will be formally welcomed in a ceremony in the gardens of Buckingham Palace. It will be attended by the Queen and Prince Charles. The president will then attend a private lunch at the palace, which is expected to be attended by Prince Harry, but not his wife, who Trump recently described as 'nasty'. Following a wreath-laying ceremony in Westminster Abbey, Donald Trump will join Prince Charles for an afternoon tea at Clarence House. The Queen, Prince Charles and Prince Harry will then host a state banquet in the evening, which will be attended by prominent US citizens who live in the UK, as well as political and civic leaders. On Tuesday 4 June the visit includes a breakfast meeting with Prince Andrew, and then talks and a press conference with prime minister Theresa May at Downing Street. On the Tuesday evening Trump hosts a dinner at the residence of the US ambassador. On Wednesday 5 June Trump will take part in commemoration services in Portsmouth to mark the 75th anniversary of the D-Day landings. The day ends with the Queen formally bidding farewell to the US president. Trump’s entourage will also include two identical seven-seat black armoured limousines nicknamed ‘The Beast’, and a number of presidential helicopters. The president has at his side at all times one of five rotating military aides who carry the nuclear ‘football’ which can trigger a missile strike - equipped with communication tools and a book with prepared war plans. Photograph: Jonathan Ernst/X90178

The cost of the policing operation could exceed £10m, although the exact figure will be made available only months later via a freedom of information disclosure.

Trump’s last visit in July cost police more than £14.2m. At the time, 10,000 officers were deployed from all over the country, working more than 26,000 shifts, to support operations in London, Windsor and Scotland.

Organisers were reluctant to predict how many people would attend the London march which will assemble in Trafalgar Square from 11am on Tuesday.

One subgroup of protesters are planning to give the march an anti-Brexit theme, speaking out against Trump’s support for the UK leaving the EU and in particular his tweeted 2016 pre-election declaration: “They will soon be calling me MR. BREXIT!”

Other protests will be held on Monday from 5.30pm outside Buckingham Palace, where the formal state dinner will take place, and at Wednesday lunchtime from 11am at Guildhall Square in Portsmouth.