Under the Postal Services Act 2000, Parliament established Postcomm as the independent regulator for postal services. Postcomm's primary statutory duty is to ensure provision of a universal postal service. Subject to this, Postcomm will exercise its functions in the manner which it considers is best calculated to further the interests of users of postal services, wherever appropriate by promoting effective competition between postal operators.
Postcomm has wide-ranging powers to gather information and investigate complaints about anti-competitive behaviour in the mail market. A Memorandum of Understanding between Postcomm and the Office of Fair Trading ensures co-operation and co-ordination on cases of anti-competitive behaviour.