Section 7 of the Interpretation Act 1978 (IA 1978) states: 'Where an Act authorises or requires any document to be served by post (whether the expression “serve” or the expression “give” or “send” or any other expression is used) then, unless the contrary intention appears, the service is deemed to be effected by properly addressing, pre-paying and posting a letter containing the document and, unless the contrary is proved, to have been effected at the time at which the letter would be delivered in the ordinary course of post.' See also the annotations provided by Halsbury’s Annotations on Section 7, references to service by post for further information. According to Halsbury’s Laws of England, in the commentary on Proof of delivery, available in Lexis®Library (see footnote 6): 'Section 7 is in two parts, the first part dealing with what has to be done in order for service to be deemed to have been effected, and the second part, which may be rebutted by proof, dealing with