22. The circumstance prescribed under section 26(6)(c), where an appeal is pending against a decision in the case described in section 26(1)(b) even though an appeal against the decision has not been brought (or, as the case may be, an application for leave to appeal against the decision has not been made) but the time for doing so has not yet expired, is where the Secretary of State—
(a)certifies in writing that he is considering appealing against that decision; and
(b)considers that, if such an appeal were already determined, it would affect the determination of the appeal described in section 26(1)(a).