The directors may meet together for the despatch of business, adjourn, and otherwise regulate their meetings, as they think fit. Questions arising at any meeting shall be decided by a majority of votes. In case of an equality of votes, the chairman shall have a second or casting vote. A director may, and the secretary on the requisition of a director shall, at any time summon a meeting of the directors. It shall not be necessary to give notice of a meeting of directors to any director for the time being absent from the United Kingdom.