Paragraph 11 I1

Any dispute between the relevant undertaker and the drainage authority under this Part, if the parties agree, must be determined by arbitration under article 41 (arbitration), but otherwise must be determined by the Secretary of State for Environment, Food and Rural Affairs and the Secretary of State for Business, Energy and Industrial Strategy acting jointly on a reference to them by the relevant undertaker or the drainage authority, after notice in writing by one to the other.