This evidence submission to the Co-Production Futures Inquiry, jointly produced by the Institute for Crime and Justice Policy Research (ICPR) at Birkbeck, University of London and Revolving Doors, draws on learning from the three-year Lived Experience of the Law research and policy project. The submission describes how people with lived experience of the law have been involved as paid peer researchers alongside academic researchers, contributing to interviews, data analysis, policy workshops and dissemination. It outlines key lessons for effective co-production, including equitable funding, early partnership working, clearly defined roles, inclusive participation, safeguarding and ongoing communication between partners. The testimony also provides examples of co-produced outputs, including policy workshops, peer-researcher publications and a short film, demonstrating how lived experience can inform research and contribute to policy and justice reform. Overall, the submission highlights practical approaches and challenges involved in embedding co-production meaningfully within research and policy development.