(1) Any provision of the Post Office Extension Act 1865 , the Post Office (London) Railway Act 1913 and the Post Office (Site and Railway) Act 1954 which was in force immediately before the day on which this Order comes into force and contained references to the Post Office shall (including references which have effect as such references), so far as necessary for preserving its effect on and after that day, have effect as if those references were references to the Post Office company.
(2) Subject to paragraph (3), any function exercisable by the Post Office company by virtue of paragraph (1) shall be exercisable concurrently by any relevant subsidiary of the Post Office company; and references which have effect by virtue of paragraph (1) as references to the Post Office company shall be construed accordingly.
(3) Anything which by virtue of this paragraph must be done by or in relation to the Post Office company and any relevant subsidiary of the Post Office company shall, so far as the context permits, be taken as so done if it is done by or in relation to any of them.
(4) In the Acts to which this article applies references to the purpose or purposes of the Post Office shall be construed as references to the purpose or purposes of the businesses of the Post Office company and any relevant subsidiary so far as those businesses relate to the provision of postal services.
(5) In this article “the Post Office company” and “relevant subsidiary” have the same meanings as in Part IV of the Postal Services Act 2000.