# The Civil Procedure Rules 1998, Rule 20.4: Defendant’s counterclaim against the claimant


(1) A defendant may make a counterclaim against a claimant by filing particulars of the counterclaim.
(2) A defendant may make a counterclaim against a claimant—
(a) without the court’s permission if the defendant files the counterclaim with the defence; or
(b) at any other time with the court’s permission.
(Part 15 makes provision for a defence to a claim and applies to a defence to a counterclaim by virtue of rule 20.3).
(3) Part 10 (acknowledgment of service) does not apply to a claimant who wishes to defend a counterclaim.

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Source: https://www.legislation.gov.uk/uksi/1998/3132/rule/20.4 (the official version)
Page: https://openlegislation.uk/civil-procedure-rules-1998/rule-20.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.