An application for a warrant may be made by an officer of a HSC trust or a constable where any person liable to be detained in a place in circumstances amounting to a deprivation of liberty is found on any premises to which admission has been refused or refusal of such admission is apprehended. The warrant authorises any constable accompanied by a medical practitioner, and an approved social worker (if appropriate), to enter the premises using force if necessary and to remove the person.