(1) A body which -
(a) is an organisation of workers or of employers,
(b) is a professional or trade organisation, or
(c) controls entry to, or the carrying on of, a profession, vocation or occupation,
shall not discriminate against a person in relation to membership of that body or any benefits, other than pension rights, provided by it or in relation to entry to, or the carrying on of, that profession, vocation or occupation.
(2) A body referred to in subsection (1) shall not discriminate against a person by publishing or displaying, or causing to be published or displayed, an advertisement in contravention of section 10(1) in so far as the advertisement relates to -
(a) membership of that body or any benefits, other than pension rights, provided by it, or
(b) entry to, or the carrying on of, a profession, vocation or occupation controlled by that body.