The JMC comprises many participating and observing member bodies from across the UK. Their complementary expertise covers the teaching and learning of mathematics in schools, colleges and universities; the initial training and ongoing professional learning of teachers and lecturers; mathematics education research; educational policy and mathematical applications and interests more generally.

The JMC makes representations to government and other bodies both proactively and reactively.  It works closely with the Royal Society’s Advisory Committee on Mathematics Education, overseas the British Congress of Mathematics Education and undertakes other targeted projects and activities, producing occasional reports and working papers.