"(1) A person is personally responsible for all the relevant debts of a company if at any time-- (a) in contravention of a disqualification order or of section 11 of this Act he is involved in the management of the company, ..."
"For the purposes of this section, a person is involved in the management of a company if he is a director of the company or if he is concerned, whether directly or indirectly, or takes part, in the management of the company."