Sch A1 para 161
(1) For the purposes of Part X of the Employment Rights Act 1996 (unfair dismissal) the dismissal of an employee shall be regarded as unfair if the dismissal was made— (a) for a reason set out in sub-paragraph (2), or (b) for reasons the main one of which is one of those set out in sub-paragraph (2). (2) The reasons are that— (a) the employee acted with a view to obtaining or preventing recognition of a union (or unions) by the employer under this Schedule; (b) the employee indicated that he supported or did not support recognition of a union (or unions) by the employer under this Schedule; (c) the employee acted with a view to securing or preventing the ending under this Schedule of bargaining arrangements; (d) the employee indicated that he supported or did not support the ending under this Schedule of bargaining arrangements ; (e) the employee influenced or sought to influence the way in which votes were to be cast by other workers in a ballot arranged under this Schedule; (f) the employee influenced or sought to influence other workers to vote or to abstain from voting in such a ballot; (g) the employee voted in such a ballot; (h) the employee proposed to do, failed to do, or proposed to decline to do, any of the things referred to in paragraphs (a) to (g). (3) A reason does not fall within sub-paragraph (2) if it constitutes an unreasonable act or omission by the employee.