Civil mediation in Britain has rapidly moved away from being an option, for private choice, to becoming increasingly a compulsory or near-compulsory part of the public justice system. But regulation of the mediation industry remains minimal, and undertaken on an essentially private, self-regulatory basis. This raises a perception or actuality of risk that mediation and its regulation may better serve the interests of stakeholders in the mediation industry than the individual citizen who may come to mediation as a one-off player with no available alternative dispute resolution mechanism. This article argues that there are ‘public interest’ values and expectations of a constitutional and democratic nature at stake here which require recognition and protection via an effective and credible regulatory regime. It concludes that such a solution may in reality serve the interests both of the mediation industry and those individuals who may come into contact with it, offering a ‘win-win’ outcome.