(1) Any provision contained in a company's articles shall be void in so far as it would have the effect either -
(a) of excluding the right to demand a poll at a general meeting on any question other than the election of the chairman of the meeting or the adjournment of the meeting, or
(b) of making ineffective a demand for a poll on any such question which is made -
(i) by not less than five members having the right to vote at the meeting, or
(ii) by a member or members representing not less than one-tenth of the total voting rights of all the members having the right to vote at the meeting, or
(iii) by a member or members holding shares in the company conferring a right to vote at the meeting, being shares on which an aggregate sum has been paid up equal to not less than one-tenth of the total sum paid up on all the shares conferring that right.
(2) The instrument appointing a proxy to vote at a meeting of a company shall be deemed also to confer authority to demand or join in d