Paragraph 5 Protective works to buildingsI1

The promoter, in the case of the powers conferred by article 20 (protective work to buildings and structures), shall so exercise those powers as not to obstruct or render less convenient the access to any apparatus without the written consent of the undertaker and, if by reason of the exercise of those powers any damage to any apparatus (other than apparatus the repair of which is not reasonably necessary in view of its intended removal or abandonment) or property of any undertaker or any interruption in the supply of electricity, gas or water, as the case may be, by the undertaker is caused, the promoter shall—

Nothing in this paragraph shall impose any liability on the promoter with respect to any damage or interruption to the extent that such damage or interruption is attributable to the act, neglect or default of an undertaker or its officers servants contractors workmen or other agents; and the undertaker shall give to the promoter reasonable notice of any claim or demand as aforesaid and no settlement or compromise thereof shall be made without the prior written consent of the promoter which shall not be unreasonably withheld or delayed.