Regulators should be encouraged to see themselves as part of an integrated system of regulation and to work together and learn from each other. According to the OECD Best Practice Principles for the Governance of Regulators (OECD, forthcoming), the effectiveness and efficiency of a regulatory system depends, in part, on the extent to which potential duplication and gaps between regulators are anticipated and avoided. A systematic mapping of the lines of accountability and the shared responsibilities deriving from the new PMU functions would help clarify the potential reform needs in the mandate and functions of other authorities and the need for co-ordination mechanisms.