John Caudwell has sold a Knightsbridge mansion for £55 million, according to reporting on the sale. The property is located in Knightsbridge and has a history that includes serving as the Panamanian Embassy. Later, the home became associated with Dame Margot Fonteyn after she married Roberto Arias, described in the reports as Panama’s ambassador to the UK at the time. The accounts note that Fonteyn lived at the residence following the marriage, linking the address to the ballerina’s personal history. The coverage focuses on the price of the transaction and the building’s prior diplomatic and later private use, but does not provide additional details on the identity of the buyer or the full terms of the sale. Overall, the sources agree on the sale price and on the mansion’s ownership and occupancy timeline involving the Panamanian Embassy and Fonteyn’s residence after her marriage to Arias.