If a constable in uniform reasonably believes that a person is on his way to a gathering to which section 63 applies in relation to which a direction under section 63(2) is in force, he may, subject to subsections (2) and (3) below—
stop that person, and
direct him not to proceed in the direction of the gathering.
The power conferred by subsection (1) above may only be exercised at a place within 5 miles of the boundary of the site of the gathering.
No direction may be given under subsection (1) above to an exempt person.
If a person knowing that a direction under subsection (1) above has been given to him fails to comply with that direction, he commits an offence and is liable on summary conviction to a fine not exceeding level 3 on the standard scale.
In this section, “exempt person” has the same meaning as in section 63.