Trump arrives in Britain on Thursday after a North Atlantic Treaty Organisation summit and thousands of protesters are expected to join demonstrations during his visit, including plans to fly a blimp over parliament portraying Trump as an orange, snarling baby.
Police from almost every force have been called up for the United States president's arrival, as demonstrators prepare to protest against his first trip to the UK.
Trump's itinerary will keep him out of central London on Friday, when large protests are planned.
Similar protests are planned on Thursday evening outside the USA ambassador's home at Regent's Park and in Scotland when Mr Trump visits on Saturday.
Organizers of anti-Trump rallies say they are not expecting any trouble at all - and that it would be very unlikely for any hostility to be directed at ordinary Americans.
"We are confident that there will be huge demonstrations against Trump wherever he visits", said Chris Nineham, of the Stop the War Coalition, which is helping to stage the so-called "carnival of protest".
Winfield House has one of the largest private gardens in greater London, but it won't be possible to see the "Trump baby" balloon from its grounds. The first Labour Live event has been organised by the Labour Party.
It pointed to polling previous year showing up to two million people could take part in anti-Trump actions.
It's just been announced: "Donald Trump is coming to Britain on a state visit later this year", reads a Facebook event description for a protest planned July 13-14 that has about 60,000 saying they will attend.
"You are our friends and we will be proud to march with you".
Yet Trump's schedule will largely keep him out of central London.
Most of the protests will take place that day in central London, the USA officials said, with some occurring the days before and after.
Donald Trump will visit for a total of four days in the United Kingdom, and a variety of official activities have been planned for his stay.
According to the British Sunday Times, White House officials are planning to do all they can to "shield" Trump from the demonstrations by keeping him on a tightly organized schedule, but this will be hard as Britons have organized enormous demonstrations in major cities throughout the country.
The president is then set to take tea with Queen Elizabeth II at Windsor Castle, before heading to Scotland and the rolling green landscape of his golf course. The Prime Minister will host a dinner at Winston Churchill's birthplace Blenheim Palace, with some of businesses biggest names - thought to include Sir Jim Ratcliffe, founder of Ineos, Larry Fink, head of BlackRock, and Alex Gorsky, chief executive of Johnson & Johnson.