Abstract We report on a recent innovation for one Departmental Select Committee. While government policy commitments are well publicised, little attention is paid to the quality of commitments made or to assessing progress against those commitments. In 2020, the Health and Social Care Select Committee commissioned an Expert Panel to conduct independent, in-depth evaluations of government progress on selected policy commitments. The first evaluations in 2021/22 assessed commitments in maternity, mental health and cancer services, and workforce and it was the first time a government department has been systematically graded against its own commitments. This is an important new method of scrutiny with the potential to complement and enhance the work of Select Committee inquiries. This paper reviews the development of select committees highlighting issues relating to their operation and, in particular, assessment of evidence. We describe the innovation of the Expert Panel and its role in reviewing policy commitments and discuss implications for parliamentary scrutiny, leadership and improvements to health service.