Weights and Measures Act 1985

3(1)) An inspector entering any premises by virtue of paragraph 1 or 2 above may take with him such other persons and such equipment as he considers necessary.E+W+S

(2)It shall be the duty of an inspector who leaves premises which he has entered by virtue of paragraph 2 above and which are unoccupied or from which the occupier is temporarily absent to leave the premises as effectively secured against trespassers as he found them.