2(1)A notice to be served on any person for the purposes of section 49, or of any order or direction made or given under that section, shall be deemed to have been duly served on the person to whom it is directed if—
(a)it is delivered to him personally; or
(b)it is sent by registered post or the recorded delivery service addressed to him at his last or usual place of abode or place of business.
(2)Where under section 49 and this Schedule a person has power to authorise other persons to act thereunder, the power may be exercised so as to confer the authority either on particular persons or on a specified class of persons.
(3)Any permit, licence, permission or authorisation granted for the purposes of section 49 may be revoked at any time by the authority or person empowered to grant it.
(4)Every document purporting to be an instrument made or issued by the Secretary of State or other authority or person in pursuance of section 49 and this Schedule or any provisions so having effect and to be signed by or on behalf of the Secretary of State, or that authority or person, shall be received in evidence and shall until the contrary is proved, be deemed to be an instrument made or issued by the Secretary of State, or that authority or person.
(5)Prima facie evidence of any such instrument as is described in sub-paragraph (4) may in any legal proceedings (including arbitrations) be given by the production of a document purporting to be certified to be a true copy of the instrument by or on behalf of the Secretary of State or other authority or person having power to make or issue the instrument.