A vote given or poll demanded by proxy or by the duly authorised representative of a body corporate shall be valid notwithstanding the previous determination of the authority of the person voting or demanding a poll unless notice of determination was received by the offshore company at the office or at such other place at which . the instrument of proxy was duly deposited before the commencement of the meeting or adjourned meeting at which the vote is given or the poll demanded or (in the case of a poll taken otherwise than on the same day as the meeting adjourned meeting) the time appointed for taking the poll