The MRA is the multi-party agreement between all licensed Distribution Businesses and Suppliers. It governs the essential interactions to facilitate the management of customer choice within the retail design architecture and its inter-relationship with the wholesale Balancing and Settlement markets. Version 1 of the MRA was first signed in June 1998 on the opening of the UK electricity market to full competition.

Since 1998 the evolution of the working arrangements between Suppliers, Distribution Businesses and the Settlement Bodies has required that the agreement changes with time and as a result new versions are released regularly. The latest version of the MRA can be downloaded from this website.