253.This section provides additional provisions in respect of sections 73, 74 and 75. Subsection (1) provides that premises which are a private dwelling-house not used by, or by permission of, the occupier for the purposes of a trade or business are not liable to inspection. An inspector applying for admission to any premises for the purposes of this section must produce his certificate of appointment if required to do so. An inspector may when conducting inspections be accompanied by such persons as he considers appropriate. Subsections (6) and (7) provide that any document taken can be retained if it is going to be used in proceedings against an individual until the end of the proceedings, or for a period of 12 months. This 12 month period can be extended by another 12 months if the Regulator feels it necessary.