Benjamin Baruch Ambrose, known professionally as Ambrose, was an influential English bandleader and violinist born on September 11, 1896, in Warsaw, Congress Poland, then part of the Russian Empire. He passed away on June 11, 1971, in Leeds, England. Ambrose's career spanned from 1916 to 1971, during which he became a prominent figure in the British dance band scene, particularly in the 1920s and 1930s.

Ambrose's family moved to London from Poland, and he began his musical journey as a violin student. At 15, he traveled to New York City, where he played professionally, eventually leading his own band. After returning to London in 1922, he formed a band for the Embassy Club and later moved to the May Fair Hotel, where his band gained significant fame through radio broadcasts and recordings.

Ambrose & His Orchestra became one of the best-known British dance bands, performing at prestigious venues like the Embassy Club and Mayfair Hotel. They were known for their sophisticated sound and featured notable musicians such as Sylvester Ahola, Danny Polo, and Ted Heath, as well as singers like Sam Browne, Elsie Carlisle, Denny Dennis, and Vera Lynn.

Despite retiring from performing in 1940, Ambrose's orchestra continued to record until 1947. He made a brief comeback in the 1950s but struggled due to the decline of the big band era and financial difficulties. He managed singer Kathy Kirby in the 1960s, though his management was controversial.

Ambrose's contributions to music have been celebrated through numerous reissues of his work, and he remains a respected figure in the history of British dance band music.