(1) The following provisions have effect for the purposes of -
section 1006 (copy of application to be given to members, employees, etc), and
section 1007 (copy of application to be given to new members, employees, etc).
(2) A document is treated as given to a person if it is -
(a) delivered to him, or
(b) left at his proper address, or
(c) sent by post to him at that address.
(3) For the purposes of subsection (2) and section 7 of the Interpretation Act 1978 (c. 30) (service of documents by post) as it applies in relation to that subsection, the proper address of a person is -
(a) in the case of a firm incorporated or formed in the United Kingdom, its registered or principal office;
(b) in the case of a firm incorporated or formed outside the United Kingdom -
(i) if it has a place of business in the United Kingdom, its principal office in the United Kingdom, or
(ii) if it does not have a place of business in the United Kingdom, its registered or principal office;
(c) in the case of an
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