The term tertiary education has gained prominence in recent policy debates in the UK [Morgan (2023). "Labour 'would review whole landscape' of tertiary education." "Times Higher Education," 28 November. https://www.timeshighereducation.com/news/labour-would-review-whole-landscape-tertiary-education]. This paper presents findings from a review of the use of the term in academic and policy papers in the UK over the last 80 years. The analysis reveals the role of international organisations in defining this term initially as a synonym for post-compulsory education before using it as a statistical measure which became a normative guide for many member states. More recently, the term tertiary education has been used as a descriptor of systems of educational governance and by the World Bank for specific systems of organisation. Using these definitions as a guide, the review demonstrates differences in government policy in the four nations of the United Kingdom: England, Northern Ireland, Scotland and Wales. Here there is evidence of periodic and partial policy change, but little sustained full engagement with this agenda. The review suggests that if future tertiary education policy initiatives are introduced they should cover all potential learners once they have left the compulsory phase of education and should be advanced by regional bodies with involvement from learners, employers and community representatives allocating funds from a single tertiary education budget.