Local Government Finance Act 1988

7(1)If a valuation officer needs to value a hereditament [F1in Wales] for the purpose of carrying out functions conferred or imposed on him by or under this Part, he and any person authorised by him in writing may enter on, survey and value the hereditament if sub-paragraph (2) below is fulfilled and (where it applies) sub-paragraph (3) below is fulfilled.E+W

(2)At least 24 hours’ notice in writing of the proposed exercise of the power must be given.

(3)In a case where a person authorised by the valuation officer proposes to exercise the power, the person must if required produce his authority.

(4)If a person wilfully delays or obstructs a person in the exercise of a power under this paragraph, he shall be liable on summary conviction to a fine not exceeding level 1 on the standard scale.