47.—(1) This paragraph applies if the Court 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.N.I.
(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 Court 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.