Article 2 Definition of the principal authority
(1)
For the purpose of these Rules the “principal authority” means the person with control of a business.
(2)
In the case of a limited company, a person is taken as having control if—
(a)
he is a director of that company (or of another company) who has control of it; or
(b)
the directors of that company (or another company which has control of it) are accustomed to act in accordance with his directions or instructions.