Addition, substitution and removal of parties
9.—(1) The First-tier Tribunal may make an order adding, substituting or removing a party as an appellant or a respondent including where—
(a)the wrong person has been named as a party; or
(b)the addition, substitution or removal has become necessary because of a change in circumstances since the start of proceedings.
(2) If the First-tier Tribunal makes an order under paragraph (1) it may make such consequential orders as it considers appropriate.
(3) A person who is not a party may make a written application to the First-tier Tribunal to be added or substituted as a party under this rule.
(4) If the First-tier Tribunal refuses an application under paragraph (3) it must consider whether to permit the person who made the application to provide submissions or evidence to the First-tier Tribunal.