The Maths Hub programme, launched in summer 2014, brings together mathematics education professionals in a collaborative national network of 35 hubs, harnessing maths leadership and expertise across each region, to develop and spread excellent practice, for the benefit of all pupils and students. The Maths Hubs Network runs a series of nationally co-ordinated professional development projects for anyone involved in the teaching of maths. The emphasis is on collaborative, exploratory, evidence-based professional development and research, continuing through the whole year for substantial professional and systemic change: these are not top-down, one-off courses. The projects are delivered through locally-based Work Groups led by an expert, in which participants contribute to and learn from the national project. Each Maths Hub puts together its own programme of Work Groups to run locally, and many projects have Work Groups in all Maths Hubs, making them available to anyone who wants to join.