Paragraph 11 Co-operationI1

Where in consequence of the proposed construction of any of the authorised development, the promoter or an undertaker requires the removal of apparatus under paragraph 7(2) or a specified undertaker makes requirements for the protection or alteration of apparatus under paragraph 9(2), the promoter shall use its best endeavours to co-ordinate the execution of the works in the interests of safety and the efficient and economic execution of the authorised development and each specified undertaker shall use its best endeavours to co-operate with the undertaker for that purpose.