The next chancery, also on Grosvenor Square, was designed by Finnish American modernist architect Eero Saarinen and constructed in the late 1950s, opening in 1960.

A large gilded aluminum bald eagle by Theodore Roszak,[10] with a wingspan of over 11 metres (35 feet), is situated on the roof of the Chancery Building, making it a recognizable London landmark.

A thousand police officers formed a cordon that the protesters failed to breach and remained relatively peaceful until the crowd began to disperse when there was disorder in the neighbouring streets.

[18][19][20] On November 6, 2024, the environmental activist group Just Stop Oil vandalised the compound wall of the embassy with orange paint in response to Donald Trump winning the 2024 United States presidential election.

A massive security operation at the embassy saw one side of Grosvenor Square closed to public access by car, and armed roadblocks were stationed outside the building.

Anonymous intelligence sources cited in the media claimed that the man was planning to hijack the aircraft and crash it into the United States embassy in London, using the rooftop eagle to identify it from the air.

[28] In March 2009, the U.S. Department of State's Bureau of Overseas Buildings Operations announced that four architectural firms had been selected for the final phase of the design competition.

[33] On 23 February 2010, the U.S. government announced that a team led by the firm of KieranTimberlake had won the competition to design the new embassy building and surrounding green spaces.

[34] The winning design resembles a crystalline cube, with a semi-circular pond on one side (called a "moat" by The Times)[35] and surrounded by extensive public green spaces[36] and the Embassy Gardens housing development.

[37][38] US President Donald Trump had been expected to visit in February 2018 to undertake the official opening of the new embassy but, in January 2018, announced he would not make the trip.

Trump publicly criticized the cost of the new embassy and its location, as well as the apparent price received for the sale of the lease of the building in Grosvenor Square, blaming the administration of his predecessor, Barack Obama, for making what he referred to as a "bad deal".

There are also American consulates general in Belfast and Edinburgh, a Welsh Affairs Office in Cardiff, and a contact centre in Glasgow.