Sch A1 para 47
(1) This paragraph applies if the CAC accepts an application under paragraph 11 or 12 relating to a bargaining unit or proceeds under paragraph 20 with an application relating to a bargaining unit. (2) The application in question is invalid if— (a) the application is made within the period of 3 years starting with the day after that on which the CAC gave notice of acceptance of the application mentioned in sub-paragraph (1), (b) the relevant bargaining unit is the same or substantially the same as the bargaining unit mentioned in sub-paragraph (1), and (c) the application is made by the union (or unions) which made the application mentioned in sub-paragraph (1). (3) This paragraph does not apply if paragraph 48 or 49 applies.