Heritage Regulation 2012

The following additional fire protection measures must be taken for the protection of a building that is to be unoccupied for a continuous period of 60 days or more—

heating or gas services must be shut down, gas or oil supply to those services must be turned off at the mains or other point of connection to supply, and portable gas or oil storages must be removed,

permanent or temporary smoke detection systems must be installed with associated communication systems connected to the fire brigade in the district and, if the building will be unoccupied for a period of 6 months or more, provided with a permanent power supply.

This clause does not apply to any outbuilding within the curtilage or site of a building unless the outbuilding has been constructed or adapted for use as a dwelling.

The use of a building for storage of goods or materials does not constitute occupation of the building for the purposes of this clause if the building ordinarily has another use or is a building of a kind not ordinarily used for storage.