January 12, 2018: Trump cancels a planned visit to London to open the new U.S. Embassy, calling it a bad deal in a poor location.
Americans are advised to be aware of their surroundings; to be vigilant in large crowds, where tensions can quickly escalate; and to "keep a low profile".
But the president will avoid London nearly entirely during his trip, which has been characterized as an attempt to avoid humiliation over the planned protests surrounding his visit.
The next day, following a joint counter-terrorism demonstration by United Kingdom and U.S. special forces and talks with May at Chequers, Trump and his wife, Melania, will have tea with the Queen at Windsor Castle, this time serenaded by the band of the Coldstream Guards.
The U.S. Embassy issued the advice on Tuesday ahead of the President's arrival on Thursday for talks with a Prime Minister Theresa May.
Trump will spend Thursday night in London at Winfield House, the official residence of U.S. Ambassador to Britain Robert "Woody" Johnson.
Protests are expected against Trump, whose policies - including a travel ban on a number of predominantly Muslim countries, detention of child migrants on the US-Mexico border and imposition of tariffs on European Union steel and aluminium exports - have all been criticised by the UK.
The demonstrators plan to loft a large blimp-like balloon over the skies beside Westminster Palace, depicting a bronzed "Trump Baby" in diapers, clutching a mobile phone.
After he was invited previous year, more than 1.86 million people signed a petition saying Trump should not be given a state visit because it could embarrass the queen and thousands of police will also be on duty with large protests expected.
"It is in the interests of the U.K.to stand up and take a firm moral stance", said Zoe Gardner, a researcher and spokesperson of the Stop Trump Coalition, which is organizing protests this week in cities across the country.
President Donald Trump will be arriving Thursday in Britain, his first visit since becoming president.
"He's here to do more important things than worry about some protesters".
From there, Trump and his wife Melania are expected to travel to Windsor to meet Queen Elizabeth.
The baby blimp of President Trump is due to be flown over London this week.
May will host a black-tie dinner for Trump at the stately home that will be attended by senior ministers and about 100 business leaders, including the likes of Blackstone group, Blackrock, Diageo, McLaren and Arup.
"I think that's absolutely disgusting", Eugene Bibby, who runs a domestic appliance fix shop in Tommyfield Market in Oldham, told Fox News about the balloon.