xmlns:atom="http://www.w3.org/2005/Atom"
84. Subject to the special cases referred to in rule 85, documents shall be sent to non-parties—
(a)at any address for service which they may have notified;
(b)where no address has been notified—
(i)at any known address or place of business in the United Kingdom;
(ii)if the party is a corporate body, at its registered or principal office in the United Kingdom;
(c)in any case, if permitted by the President or the Vice-President, at an address outside the United Kingdom.