Except where otherwise expressly provided for in this Order and unless otherwise agreed in writing between the parties, any difference under any provision of this Order (other than a difference which falls to be determined by the tribunal) must be referred to and settled by a single arbitrator to be agreed between the parties or, failing agreement, to be appointed on the application of either party (after giving notice in writing to the other) by the President of the Institution of Civil Engineers.

Subject to any other provision of this Order, any arbitration to be undertaken under paragraph (1) must be carried out using the same process as is set out in sub-paragraphs (2)(d) to (f), (4) to (8) and (12) of paragraph 19 of Schedule 2 subject to the modifications set out in paragraph (3).

The modifications referred to in paragraph (2) are that references in those provisions of Schedule 2 to each of the terms set out in column (1) of the following table are replaced by the corresponding term in column (2) of the table—