Introduction / Julia Black, Peter Muchlinski -- The juridification of relations in the UK utilities sector / Colin Scott -- Commercial regulation and judicial review: the fault lines / Martyn Hopper -- Court procedures and remedies in the context of commercial regulation / Michael Swainston -- The need for wholesale reform on vires issues in public and private law / Christopher Clarke, Catharine Otton-Goulder -- Reviewing regulatory rules: responsibility to hybridisation / Julia Black -- Irrationality and commercial regulators / Paul Walker