Minutes shall be kept of proceedings of the Service and of the committees and sub-committees of the Service.

Minutes of any such proceedings shall be evidence of those proceedings if they are signed by the person purporting to have acted as chairman of the proceedings to which the minutes relate or of any subsequent proceedings in the course of which the minutes were approved as a correct record.

Where minutes of any such proceedings have been signed as mentioned in sub-paragraph (2), those proceedings shall, unless the contrary is shown, be deemed to have been validly convened and constituted.