This report written by Dr Anthony Mann with Professor Adrian Oldknow and commissioned by Futurelab on behalf of Ingenious – the European Co-ordinating Body for Maths, Science and Technology provides an overview of the character and effectiveness of employer engagement in UK education (relevant to young people within the education system aged 5 to 19) related specifically to participation, achievement and progression in subjects of study and careers related to Science, Technology, Engineering and Mathematics (STEM). It quantifies and addresses a series of key issues including the: range and volume of engagement activities, character of delivery, impact of engagement activities, and the organisation and implementation of effective practice.