International policy and practice reviews support policy development by learning what works, in what contexts, and why. They also provide the opportunity to consider how that learning might be effectively translated to the English context. Three years after the publication of the 2017 Careers Strategy (ED612489) (Department for Education, 2017), Pye Tait Consulting and Carol Stanfield Consulting were commissioned to review literature relating to the following two questions: (1) What are the features of Careers Information, Advice and Guidance (CIAG) systems in other countries?; and (2) What recent causal or outcome evidence is there regarding the impact of CIAG? This report draws upon the findings of 5 major international literature reviews, published since 2016, which covered areas such as careers education, careers in the curriculum, career guidance and employer engagement. Chapter 1 presents an introduction. Chapter 2 summarises these reviews and presents common recommendations. Chapter 3 presents commonalities and difference across internationals CIAG systems. Chapter 4 presents recent evidence of effective career interventions. [This literature review was written by Pye Tait Consulting and Carol Stanfield Consulting.]