This included a full refurbishment of all restaurants, guest rooms, health facilities, and public areas. The hotel underwent a four-year renovation and restoration costing £142 million, and it reopened in 2008. The house was replaced with a 92-bedroom extension, which was officially opened in 1957 by the Chancellor of the Exchequer, Peter Thorneycroft. Schröder remained in the house until his death in 1940, and permission to demolish the house was finally given in 1956. The original scheme for the hotel was not finally realised until the 1950s because Bruno, Baron Schröder, who had acquired the lease of 35, Park Street in about 1910, had refused to give it up to Edwards.

The Great Room initially became home to the Officers' Sunday Club and then, in 1943, to the US officers' mess. Ten thousand sandbags and five miles of blackout material protected the building, and its entertaining space was used in the war effort. Grosvenor House managed to have a 'good' World War II.

The restored plane still flies in its original livery with the Shuttleworth Collection. The hotel gained widespread publicity in 1934 when Edwards named his de Havilland DH.88 Comet racer after it and won the MacRobertson England-Australia Air Race. Apart from the war years, when he served with the Royal Artillery and later in the NAAFI, Jones held this position until he retired in 1965. In 1936, at the age of 29, Jones became general manager of Grosvenor House. In January 1929, six months after the completion of the first block of apartments, and six months before completion of the hotel, Edwards brought Jones to Grosvenor House as accountant. Jones had worked for Edwards in Doncaster. The hotel owed its existence to Arthur Octavius Edwards, who conceived and built it, then presided over it as chairman for 10 years. The Grosvenor House Hotel was built in the 1920s and opened in 1929 on the site of Grosvenor House, the former London residence of the Dukes of Westminster, whose family name is Grosvenor. History Grosvenor House Hotel, 1920s postcard illustration

The hotel is managed by JW Marriott Hotels, which is a brand of Marriott International, and it is owned by Katara Hospitality. Across from Hyde Park, the hotel is built on the former site of the 19th century aristocratic Grosvenor House residence. JW Marriott Grosvenor House London, originally named the Grosvenor House Hotel, is a luxury hotel that opened in 1929 in the Mayfair area of London, England. 86–90 Park Lane, Mayfair, London W1K 7TN, England

Grosvenor square marriott