4(1)The Secretary of State may impose a requirement for the individual to comply with directions given by a constable in respect of the individual's movements (which may, in particular, include a restriction on movements).U.K.
(2)A constable may give such directions only for the purpose of securing compliance—
(a)with other specified measures, or
(b)with a condition imposed under this Act requiring the individual to be escorted by a constable.
(3)Directions may not remain in effect for a period that is any longer than the constable giving the directions considers necessary for the purpose mentioned in sub-paragraph (2); but that period may not in any event be a period of more than 24 hours.