(1)An authorised officer of a food authority may, on production of the officer’s written authority if demanded, enter at all reasonable hours a food business establishment for the purpose of—
(a)producing a food hygiene rating;
(b)carrying out a re-rating;
(c)determining an appeal under section 5; or
(d)enforcing any of the requirements in section 7.
(2)But in the case of entry into any part of an establishment used only as a private dwelling 24 hours’ notice of the intended entry must be given to the operator.