The European Commission has published its plans to impose tougher regulation on credit rating agencies, including restrictions on the kind of services they can provide.

Most rating agencies already followed a voluntary code agreed on in 2004 by the International Organization of Securities Commissions, but this self-regulation had failed, Commission officials say. Legal supervision was needed because the code was based on the โ€œcomply or explainโ€ principle, because there was no โ€œrobust mechanism of controlโ€ over agency behavior and because in many areas the code was simply too lenient, the Commission contents.