Many aspects of regulation have no adverse impact on competition. Examples would be professional competence, client confidentiality and codes of ethics. In other cases, however, regulation may sometimes damage competition, notably in the restriction of educational facilities for aspirants, quotas on numbers of operators, quotas on students and "scale" or "recommended" fees. Some restrictions may, however, be justified if there are wider public policy benefits. It is essential to ensure that regulation does not simply protect certain practitioners or serve to support narrow, vested economic interests. It is important to also recognise that, for the most part, maintaining standards and facilitating competition are mutually supportive.