3(1)The agency must have a satisfactory system—
(a)for enabling it to determine whether persons regulated by it are complying with the obligations which it is the responsibility of the agency to enforce; and
(b)for the discharge of the agency’s responsibility for the enforcement of those obligations.
(2)The system may provide for the functions mentioned in sub-paragraph (1)(a) to be performed on its behalf (and without affecting its responsibility) by any other body or person who is able and willing to perform them.