The Estate Agents (Entry and Inspection) Regulations 1981

2.  Unless he is authorised by the Director, an officer of a local weights and measures authority is not to be taken to be duly authorised for the purposes of section 11 of the Estate Agents Act 1979 (which confers powers of entry and inspection in connection with the enforcement of that Act on duly authorised officers of enforcement authorities) so far as concerns the exercise of any power under paragraphs (b), (c) and (d) of sub-section (1) of that section in relation to any book or document relating to the business carried on by the Bank of England or a bank which is a bank within the meaning of section 9 of the Bankers' Books Evidence Act 1879:

Provided that where a customer on whose behalf a bank maintains an account has consented in writing to the exercise of any power under paragraph (b) of the said sub-section (1) with respect to any such book or document as aforesaid in so far as it contains information about the affairs of that customer then, in relation to any suspected offence to which the said paragraph (b) applied before that consent was given, this Regulation shall not apply to the exercise of that power by any such officer as aforesaid with respect to that book or document so far as concerns that information.