What might a new route into mathematics teaching look like when mathematicians and teacher educators design it together? This talk presents a cross-faculty collaboration at UCL between Mathematics, Statistics, and the IOE that aims to create an innovative interdisciplinary pathway into the mathematics teaching profession. We discuss the design of the Mathematics and Secondary Mathematics Education Teacher Degree Apprenticeship BSc (QTS) programme, the opportunities and challenges of cross-faculty collaboration, and the potential impact on preparing future mathematics teachers.