The Civil Procedure Rules 1998

[F1Functions of a special advocateE+W

88.23.  The functions of a special advocate are to represent the interests of a relevant party by—

(a)making submissions to the court at any hearing or part of a hearing from which the relevant party and the relevant party’s legal representative are excluded;

(b)adducing evidence and cross-examining witnesses at any such hearing or part of a hearing;

(c)making applications to the court or seeking directions from the court where necessary; and

(d)making written submissions to the court.]