International Organisations (Privileges and Immunities) Act 1963

SECTION 9  

9   PRIVILEGES AND IMMUNITIES OF JUDGES AND OFFICIALS OF, AND PERSONS ENGAGED IN BUSINESS BEFORE, THE INTERNATIONAL COURT OF JUSTICE  
The regulations may confer upon:

(a)    the judges, assessors and officials of the International Court of Justice established by the Charter of the United Nations;

(b)    persons engaged on missions by order of that Court;

(c)    the agents, advocates and counsel of countries that are parties in cases before that Court; and

(d)    witnesses in cases before that Court;

such privileges and immunities as are required to give effect to the Statute of that Court and such privileges and immunities in respect of acts and things done in the course of the performance of their functions in connexion with the business of that Court as are required to give effect to any resolution of, or convention or agreement approved by, the General Assembly of the United Nations.