99.       In this Part—

“contentious matter” means a matter that arises in, and that relates to the subject matter of, proceedings before any court, tribunal or other body or person before which the respective legal rights and obligations of two or more parties are determined, to which the person instructing the practising barrister concerned is a party;

“limited liability partnership” means a relevant business in respect of which an authorisation, granted under section 125, is for the time being in force;

“relevant business” means—

(a) a partnership of solicitors, or

(b) a legal partnership.