(1) In addition to the case provided by section 136 (share qualification of directors), the office of director shall be vacated if the director -

(a) is adjudicated bankrupt or being a bankrupt has not obtained a certificate of discharge in the relevant jurisdiction; or

(b) becomes or is deemed to be subject to a disqualification order within the meaning of Chapter 4 of Part 14.

(2) Save to the extent that the company's constitution provides otherwise, the office of director shall be vacated if -

(a) the director resigns his or her office by notice in writing to the company; or

(b) the health of the director is such that he or she can no longer be reasonably regarded as possessing an adequate decision making capacity; or

(c) a declaration of restriction is made in relation to the director and the directors, at any time during the currency of the declaration, resolve that his or her office be vacated; or