Henry Kariuki Mwangi v Joyce Waithira Mwangi
The bottom line
#A Kenyan land court allowed a defendant to add new evidence mid-trial, but made her pay costs first or lose the permission.
What this practically means
#Executive summary
#Key legal issues
#Competence of a Supporting Affidavit sworn by an advocate on contentious facts
Though advocates should not descend into the arena by swearing affidavits on contested facts, the affidavit was admitted because the applicant resided out of the jurisdiction, there was extreme urgency, and no irremediable prejudice was shown.
Order 19 Rule 2 confines affidavits to facts within the deponent's knowledge, and advocates should not conflate the roles of counsel and witness. However, courts routinely grant procedural latitude where the applicant is abroad and there is urgency, provided no irremediable prejudice results. Striking out the affidavit would elevate procedural form over substantive justice under Article 159(2)(d).
Leave to adduce additional evidence and call an additional witness after closure of the plaintiff's case
Leave granted: the defence hearing had not commenced, the trial flow was not fatally disrupted, the plaintiff's prejudice was curable through cross-examination and rebuttal evidence, and the £14,000 receipt went to the root of the controversy.
The court balanced the plaintiff's right to an expeditious trial and finality against the defendant's Article 50(1) right to present all material evidence in her defence. Because the defence hearing had not started, the trial was not disrupted; the plaintiff could cross-examine the new witness and seek leave to adduce rebuttal evidence under the Evidence Act. The receipt was critical to the core issue of financial contributions toward the suit property.
Legal principles established
#- An amendment or introduction of evidence will not be allowed if it causes injustice to the other party which cannot be compensated by costs.
- Rules of procedure are handmaidens of justice and should not be used to defeat substantive justice.
- Striking out an affidavit at an interlocutory stage for procedural defects would elevate form over substantive justice contrary to Article 159(2)(d).
Court orders
#- 1.Defendant/Applicant granted leave to file and serve a Supplementary Witness Statement, introduce the retrieved funds transfer payment receipt marked Exhibit 'JM-1', and rely on the additional witness statement of Mrs. Mary Njeri Kariuki within seven (7) days
- 2.Plaintiff/Respondent at liberty to file and serve any consequential supplementary statement or apply for leave to adduce evidence in rebuttal within seven (7) days of service
- 3.Defendant/Applicant to bear costs of the Notice of Motion dated 27/07/2026 and thrown-away costs of Kshs 20,000 occasioned by the adjournment of the defence hearing, payable to the Plaintiff/Respondent before the next hearing, failing which Order (i) stands vacated
- Jurisdiction invoked
- Sections 1A, 1B, 3A & 6 of the Civil Procedure Act, Cap. 21 and Article 159(2) of the Constitution
Key timeline
#Practical implications
#Frequently asked questions
#Cite this brief
#Cite this brief
Caselaw, "Henry Kariuki Mwangi v Joyce Waithira Mwangi", Case Analysis (2026). ELCLC No. E058 of 2023. Source: https://new.kenyalaw.org/akn/ke/judgment/keelc/2026/6071/eng@2026-09-21
Suggested citation format for research notes or client memos. Always verify the original judgment before relying on any point.