909. Controlling authority.

The 'controlling authority' of a public airport company1 is the principal council2 or principal councils of which the company is a subsidiary3; and a 'composite authority' is a controlling authority consisting of two or more principal councils, the councils concerned being referred to as the 'constituent councils' of that authority4.

It is the duty of the controlling authority to exercise its control over the company so as to ensure that at least three of its directors, or at least one quarter of their number (whichever is less), are suitably qualified full-time employees of the company, unless the Secretary of State5