Mental Health Act 2007 No 8
Current version for 14 May 2020 to date (accessed 4 August 2020 at 13:16)
59   Police assistance
(1)  A police officer to whose notice a breach order is brought must, if practicable—
(a)  apprehend and take or assist in taking the person the subject of the order to the mental health facility, or
(b)  cause or make arrangements for some other police officer to do so.
(2)  A police officer may enter premises to apprehend a person under this section, and may apprehend any such person, without a warrant and may exercise any powers conferred by section 81 on a person who is authorised under that section to take a person to a mental health facility or another health facility.
 Section 81 sets out the persons who may take a person to a mental health facility and their powers when doing so.