Sch 3 para 13
(1) An advisory body shall consist of three persons of whom— (a) one shall be a person who is of counsel to Her Majesty and is appointed by the Lord Chancellor to be the chairman of the advisory body; and (b) another shall be a person appointed by the Secretary of State, being a member of the respondent’s profession who is an officer of a department of the Government of the United Kingdom; and (c) the other shall be a person appointed by the Secretary of State from among the members of the respondent’s profession nominated as mentioned in paragraph 1 above. (1A) The chairman of an advisory body shall vacate his office on the day on which he attains the age of 75 . (2) Sub-paragraph (1) above shall have effect in relation to an advisory body in Scotland as if for the reference to the Lord Chancellor there were substituted a reference to the Lord President of the Court of Session.