The Act Commentary on Sections Part 7: Noise Section 77 Power of entry
209.Section 77 (subsections (3) and (4)) provides an authorised officer of a local authority with a power of entry (but not by force) in order to silence an intruder alarm in or on premises in the authority’s area where he is satisfied that the conditions described in section 77(2) are met. The use of the power is not limited to premises in an area which has been designated as an alarm notification area, but where the premises are in such an area, one of the conditions that must be satisfied before the power can be used is that reasonable steps have been taken to get the key-holder to silence the alarm.