St Johnston
Shortly after her marriage to Andrew St Johnston - head of the Elliott computing department - in 1958, St Johnston founded Vaughan Programming Services (VPS) in Hertfordshire in 1959, taking software contracts, and training and hiring additional programmers as needed. On its tenth anniversary in 1969, company literature stated that "VPS was the first registered independent Software unit in the UK (February 1959), that was not a part of a computer manufacturer, not a part of a computer bureau, not a part of a users' organisation and not a part of a consultancy operation."