Application for leave to apply for judicial review - Whether union can be heard at leave stage - Test for leave to apply for judicial review - Civil Procedure Rules Part 10 - Part 56 - Rules 1.1(1), 1.2, 2.2, 2.2(1), 2 and 3, 56.3, 56.3(1), 56.3(2), 56.3(3), 56.4(4), 56.4(1), 56.4(1), 56.4(2), 56.4(3), 56.4(3)(a), 56.4(8), 56.11(5), 56.12, 56.13(2)(c), 56.15 - Labour Relations and Industrial Disputes Act, S. 12(4)(c), 12(5)(C)(I) - Section 3(3) of the Employment (Termination and Redundancy Payments) Act