Winfield House is an English townhouse in Regent's Park, central London and the official residence of the United States Ambassador to the United Kingdom. The grounds are 12 acres (4.9 ha), the largest private garden in London save for that of Buckingham Palace.

Barbara Woolworth Hutton was an American debutante, socialite, heiress, and philanthropist. She was dubbed the "Poor Little Rich Girl"—first when she was given a lavish and expensive debutante ball in 1930 amid the Great Depression, and later due to a notoriously troubled private life.