In a British tradition of actor-management, Buchanan frequently produced his own shows, many of which were premiered in the Alhambra Theatre, Glasgow. He was also heavily involved in the more commercial side of British show business. He was responsible, with partners, for the building and ownership of the Leicester Square Theatre, London, and the Imperial in Brighton. He also controlled the Garrick Theatre in the West End of London and the King's Theatre in Hammersmith. Jack Buchanan Productions (in which his partners were J. Arthur Rank and Charles Woolf) owned Riverside Studios in Hammersmith.