What are an employer's obligations with regard to competent workers?

Under reg.7 of the Management of Health and Safety at Work Regulations 1999 (SI 1999/3242), an employer is required to appoint one or more competent persons to assist in compliance with the main obligations of health, safety and fire law. Competent persons should be appointed from the employer's staff or, where this is not possible, from external sources. They must have "sufficient training and experience or knowledge and other qualities" for their role, as well as sufficient time and resources.