Paragraph 1 I1

For the protection of the utility undertakers referred to in this part of this Schedule (save for National Grid Electricity and National Grid Gas which are protected by Part 3 of this Schedule, EPN which is protected by Part 4 of this Schedule, Anglian Water which is protected by Part 5 of this Schedule and Covanta which is protected by Part 7 of this Schedule), the following provisions have effect, unless otherwise agreed in writing between the undertaker and the utility undertakers concerned.