# The Civil Procedure (Amendment) Rules 2000, Paragraph 19.4: Procedure for adding and substituting parties


(1) The court’s permission is required to remove, add or substitute a party, unless the claim form has not been served.
(2) An application for permission under paragraph (1) may be made by—
(a) an existing party; or
(b) a person who wishes to become a party.
(3) An application for an order under rule 19.2(4) (substitution of a new party where existing party’s interest or liability has passed)—
(a) may be made without notice; and
(b) must be supported by evidence.
(4) Nobody may be added or substituted as a claimant unless—
(a) he has given his consent in writing; and
(b) that consent has been filed with the court.
(5) An order for the removal, addition or substitution of a party must be served on—
(a) all parties to the proceedings; and
(b) any other person affected by the order.
(6) When the court makes an order for the removal, addition or substitution of a party, it may give consequential directions about—
(a) filing and serving the claim form on any new defendant;
(b) serving relevant documents on the new party; and
(c) the management of the proceedings.

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Source: https://www.legislation.gov.uk/uksi/2000/221/schedule/2/paragraph/19.4 (the official version)
Page: https://openlegislation.uk/civil-procedure-amendment-rules-2000/schedule-2/paragraph-19.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.