Protection of freedom of assembly and association

(1) Except with his or her own consent, no person shall be hindered in the enjoyment of his or her freedom of assembly and association, that is to say, his or her right to assemble freely and associate with other persons and in particular to form or belong to trade unions or other associations for the protection of his or her interests. (2) Nothing contained in or done under the authority of any law shall be held to be inconsistent with or in contravention of this section to the extent that the law in question makes provision— ( a ) that is reasonably required in the interests of defence, public safety, public order, public morality or public health; ( b ) that is reasonably required for the purpose of protecting the rights or freedoms of other persons; ( c ) that imposes restrictions upon public officers, employees of local government bodies, or teachers; or ( d ) for the registration of trade unions and associations of trade unions in a register established by or under any law, and for imposing reasonable conditions relating to the requirements for entry on such a register (including conditions as to the minimum number of persons necessary to constitute a trade union qualified for registration, or of members necessary to constitute an association of trade unions qualified for registration) and conditions whereby registration may be refused on the grounds that any other trade union already registered, or association of trade unions already registered, as the case may be, is sufficiently representative of the whole or of a substantial proportion of the interests in respect of which registration of a trade union or association of trade unions is sought, and except so far as that provision or, as the case may be, the thing done under the authority thereof is shown not to be reasonably justifiable in a democratic society.