Execution of works
6Where—
(a)no counter-notice is given under paragraph 3 above, or
(b)the operator, having given a counter-notice falling within that paragraph, fails within a reasonable time to make any alteration made necessary or expedient by the proposed undertaker’s works or, as the case may be, unreasonably fails to provide the required supervision,
the relevant undertaker may himself execute works for the purpose of making the alteration or, as the case may be, may execute such works without the supervision of the operator; but in either case the undertaker shall execute the works to the satisfaction of the operator.