3(1)A “right of audience” means the right to appear before and address a court, including the right to call and examine witnesses.
(2)But a “right of audience” does not include a right to appear before or address a court, or to call or examine witnesses, in relation to any particular court or in relation to particular proceedings, if immediately before the appointed day no restriction was placed on the persons entitled to exercise that right.
Source : Courts and Legal Services Act 1990 [UK]