The purpose of this thesis is to reassess the work of Sir Ambrose Heal (1872-1959), designer, manufacturer and retailer of furniture, in order to reconsider his reputation. It offers a distinct contribution to knowledge by providing a more precise description of Ambrose Heal‟s contribution to furniture design in the early part of the twentieth century together with a more carefully considered analysis of his association with Heal & Son of Tottenham Court Road, London, than has previously been attempted. In an innovative and close reading of archival materials held at the V&A and in private hands the thesis brings new insights and authoritative detail together with a greater understanding to the following: The historic influences that were to provide an aesthetic and commercial context for the work of Ambrose Heal and the development of Heal & Son. The furniture designed by Ambrose Heal, together with a consideration of the role played by Heal & Son‟s in-house Cabinet Factory and the contribution of outside suppliers and other designers in the years between 1895 and 1939. The part played by Ambrose Heal in terms of the philosophy and direction he introduced to Heal & Son and the influential role the firm came to play under his leadership. In addition to the main text the appendices provide an accessible model for the development of a catalogue raisonné with a reliable chronology and detailed record of the sale of furniture produced by the Heal & Son Cabinet Factory between 1898 and 1939, together with other useful documents and analyses.