22.—(1) Leave to appeal may not be given in relation to an appeal under Article 21 unless the judge or, as the case may be, the Court of Appeal is satisfied that the relevant condition is fulfilled.
(2) In relation to an appeal in respect of a single qualifying evidentiary ruling, the relevant condition is that the ruling significantly weakens the prosecution’s case in relation to the offence or offences which are the subject of the appeal.
(3) In relation to an appeal in respect of two or more qualifying evidentiary rulings, the relevant condition is that the rulings taken together significantly weaken the prosecution’s case in relation to the offence or offences which are the subject of the appeal.