The book provides a series of presentations and papers to mark the 20th anniversary of the CPR coming into force, many of which were delivered orally at the CPR at 20 Conference at the Bonavero Institute of Human Rights, Mansfield College, Oxford in 2019. The presentations and papers have been edited and extended to provide a permanent record available to a wider audience. The book considers the successes and failures of the CPR, and current challenges faced by those designing, administering and using the civil justice system. It covers a range of topics including: the digitisation of the civil justice system, the overriding objective, principles of proportionality, disclosure, collective redress, judicial review rules, closed material proceedings and costs and funding rules. The book contains doctrinal, theoretical and empirical research and analysis about the use of the civil procedure rules and the civil justice system more broadly.