The Civil Procedure Rules 1998

[F1Hearings in privateE+W

88.21.(1) If the court considers it necessary for any party and that party’s legal representative to be excluded from any hearing or part of a hearing in order to secure that information is not disclosed contrary to the public interest, it must—

(a)direct accordingly; and

(b)conduct the hearing, or that part of it from which that party and that party’s legal representative are excluded, in private but attended by a special advocate to represent the interests of the excluded party.

(2) The court may conduct a hearing or part of a hearing in private for any other good reason.]