An individual shall not be excluded or expelled from a trade union unless the exclusion or expulsion is permitted by this section.
The exclusion or expulsion of an individual from a trade union is permitted by this section if (and only if)—
A requirement in relation to membership of a union is "enforceable" for the purposes of subsection (2)(a) if it restricts membership solely by reference to one or more of the following criteria—
For the purposes of subsection (2)(d) "excluded conduct", in relation to an individual, means—
For the purposes of subsection (2)(d) "protected conduct" is conduct which consists in the individual's being or ceasing to be, or having been or ceased to be, a member of a political party.
Conduct which consists of activities undertaken by an individual as a member of a political party is not conduct falling within subsection (4A).
Conduct which consists in an individual's being or having been a member of a political party is not conduct falling within subsection (4A) if membership of that political party is contrary to—
For the purposes of subsection (4C)(b) in the case of conduct consisting in an individual's being a member of a political party, an objective is to be disregarded—
For the purposes of subsection (4C)(b) in the case of conduct consisting in an individual's having been a member of a political party, an objective is to be disregarded—
Where the exclusion or expulsion of an individual from a trade union is wholly or mainly attributable to conduct which consists of an individual's being or having been a member of a political party but which by virtue of subsection (4C) is not conduct falling within subsection (4A), the exclusion or expulsion is not permitted by virtue of subsection (2)(d) if any one or more of the conditions in subsection (4G) apply.
Those conditions are—
For the purposes of subsection (4G)(b) a decision to exclude or expel an individual is taken unfairly if (and only if)—
An individual who claims that he has been excluded or expelled from a trade union in contravention of this section may present a complaint to an employment tribunal.