Situated in the heart of London, on a property the size of seven soccer fields, sits a mansion known as Winfield House—this formal home of the US diplomat to the United Kingdom.
While it may be a stately residence, it has over time become known for hosting spectacular events, particularly on the Fourth of July—the United States' national holiday. This year's event featured a performance by Nile Rodgers headlining on the grounds for thousands of guests.
A Legacy of Hospitality
Style elite, athletes, and military figures have all been entertained at the property. Even the early 19th century, when the original building was built, its main purpose was for social gatherings, according to the estate's historical information.
President Donald Trump is spending the initial evening of his state visit at the 35-room residence. The Trumps also stayed there in 2019, as had the Bidens previously.
"It's not just the home of the ambassador, it serves as a centre of diplomatic hospitality," notes a retired staff member familiar with the estate.
Exclusive and Protected
What the residence isn't is a public site. Situated inside Regent's Park, it is exclusive and demands advance arrangements to gain access. Tours of the grounds were previously organized by local groups, but currently recently, access has been restricted.
Standing on the street outside, the mansion is hidden. It is surrounded in trees and provides remarkable seclusion for a central London property.
"It's really difficult to get in there. It felt like a personal achievement that I managed to get in," recalls one visitor who calls the property "magnificent" and shows admiration for the grounds.
Guided visits permit access to the main level, which functions as a "luxurious" area for receptions, and the outdoor areas. The first floor is used for the private apartments of the ambassador.
Being both a residence and a venue for many US receptions, schedules are tight. "It wasn't a matter of requesting to visit on a chosen day. It was simply, permission was given to come on the premises on a set date," explains the source.
The estate boasts the second-largest non-public outdoor space in central London, according to sources. It includes a grassy area, stone walkways, art pieces—and also has space for aircraft to touch down.
Historical Significance
Socialite and heir to the Woolworths empire Hutton sold Winfield to the US government for only symbolic amount in the mid-20th century in an arrangement described as "most generous" by the leader Harry S Truman.
She had purchased the house 10 years prior, after it was partly destroyed in a fire. The Crown Estate Commission allowed her to tear it down and rebuild it in the distinctive red brick Georgian style that still stands today.
She named it after her grandfather, Woolworth, the creator of the Woolworth store network.
As World War Two approaching and her second marriage facing particularly well, Hutton returned to America with her son in 1939. It would subsequently be revealed that this is when she met her future spouse—film star Cary Grant—who is reported to have stayed at the property with her.
Historical and Recent Use
In the war, the estate was commandeered by the Royal Air Force balloon barrage unit with officers allegedly playing football in the grounds.
She came back to the city to see what was left of the house at the conclusion of the hostilities—and after the enemy bombs. She instructed her legal representative and asked that it be handed over to the US government for repairs—and it has been used as the primary residence of diplomats from that time onward.
The past is present in the structure of Winfield. The first building was called St Dunstan's, and as per historical records, was used for visually impaired veterans of World War One. A charity of the same name still exists today.
Commenting about American leaders, a former employee states: "Eventually they all come, at least one time." He details meeting the former president and his wife the first lady during their prior official trip in 2019, which was "somewhat unusual". They dined at the residence with Queen Camilla and King Charles III before he rose to the throne.
A famous photograph of Mikhail Gorbachev—the final USSR leader—and US President George W Bush may be one of the most famous moments from the house. The pair held a joint press event there at the G7 summit in 1991.
Politicians have long used it for key moments, including international summits, grand official meals, and bringing together military figures.
Events and Security
The residence has hosted many varied functions, according to sources.
Included among these are performances by Duran Duran, Ed Sheeran, and Bastille, sometimes in the outdoor area and sometimes inside the house.
It's also been the setting to athletic activities with the Duke of Sussex participating in an sports-related reception there. Michelle Obama got stuck in with a sports day, even doing the tug of war alongside some well-known onlookers.
Style elite has also graced the halls of Winfield. A previous Vogue boss organized a London Fashion Week opening party with the ambassador at the period. A Spice Girl was seen too.
A number of the events would attract "several thousand" of guests, with the Independence Day parties usually gathering a large crowd.
A Hidden Retreat
It's a something of an getaway.
"You would never know you're in the middle of London," says one visitor.
But what's the most disappointing part of the mansion? One source says its driveway is "somewhat underwhelming" in contrast with the remainder of Winfield.
"It accommodates for big limousines but you couldn't get a brigade of soldiers marching and things. It's not like the Mall."
