This article explores the transatlantic work of Beryl Vertue (b. 1931), whose distinguished career includes selling the format for Till Death Us Do Part (BBC1, 1965-1975) and Steptoe and Son (BBC1, 1962-1974) to American television, as well as producing the Upstairs, Downstairs format adaptation Beacon Hill (CBS, 1975) in the USA. I map how her crucial involvement in the genesis of All in the Family (CBS, 1971-1979) and Sanford and Son (NBC, 1972-1977) has been neglected in existing accounts, which have tended to focus on Norman Lear. I contrast these with Vertue's own recollection, drawing out her role in the creation of these two seminal programmes. I then locate Vertue within a broader transatlantic movement of British television production personnel during the 1970s. I explore Vertue's decision-making process for Beacon Hill, a programme that deserves a more prominent place in accounts of US television history, not least because of its connections to discourses on quality. I uncover how her creative agency was informed by her difference and productive Otherness whilst also subject to tensions and limitations present within complex industrial structures. Informed by an original in-depth interview with Vertue, the article considers her an unwitting pioneer of transatlantic format adaptation.