SCHEDULE Powers which may be exercised by enforcement officers

3 Power to take persons and equipment onto premises
In exercising the power of entry mentioned in paragraph 1, an enforcement officer may—
(a) be accompanied—
(i) by any person approved by the Secretary of State for the purpose; and
(ii) if the enforcement officer has reasonable cause to expect any serious obstruction in the exercise of any of that officer’s powers, by a constable; and
(b) take along any equipment or materials required for any purpose for which the enforcement officer is exercising the power of entry.