Skip to content
AI-generated case briefs sourced from Kenya Law · Not legal advice
Caselaw
AI-generated case brief
Case Brief · caselaw.co.ke
ELCPartially AllowedNot stated in judgment· [2026] KEELC 3400 (KLR)

Rosa v Koriko & 3 others (Environment and Land Case 4 of 2021) [2026] KEELC 3400 (KLR)

Environment and Land Court
8 June 2026
MMM.N. Mwanyale
650 words in judgment
View original judgmentRead on Kenya Law Watch case
AI-assisted case brief
·~3 min to read original · ~4 min brief

The bottom line

#

A Kenyan court blocked a lawyer from acting against a former client in the same land case, striking out their application.

What this practically means

#

Executive summary

#
This is a ruling of the court at Kilgoris on a Notice of Motion dated 29.05.2026 in which the Applicant (the Plaintiff in the suit) sought two substantive orders: that the firm of Mireri and Co. Advocates be disqualified from representing the Defendant, and that the Defendant's Notice of Motion dated 28.04.2026 be struck out because it had been drawn by counsel who had previously acted for the Plaintiff, contrary to principles of confidentiality. At the directions hearing, Ms. Kithinji for the Respondents indicated that a notice of change of advocate had been filed replacing Mireri Advocates with the firm of G.P Mwangi Kithinji Advocates, so the application was said to be overtaken by events. Counsel for the Applicant maintained the application was live since the impugned application was a post-judgment application. No response was filed, so the depositions stood unchallenged. The court held that Ms. Mireri, having previously acted for the Applicant and thereby possessed advocate-client confidential information, could not act for the opposing party in the same matter, applying the retainer principle in King Woolen Mills Ltd v Kaplan Stratton Advocates (1993). Prayer 1 was overtaken by events, but the court struck out the Notice of Motion dated 28.04.2026, allowed the Respondents to instruct other counsel and file the application afresh, and made no orders as to costs.

Key legal issues

#
01

Whether an advocate who previously acted for a party may represent an opposing party in the same matter, including post-judgment proceedings

Holding

An advocate who acted for one party cannot represent the other party in the same matter; the retainer principle from King Woolen Mills Ltd v Kaplan Stratton Advocates applies and the impugned application was struck out

Reasoning

The court found the depositions unchallenged as no response was filed. Ms. Mireri was deemed to have been under a retainer by the Plaintiff, giving her possession of advocate-client confidential information. Even though judgment had been entered and only a post-judgment application was pending, the conflict principle applies. The notice of change of advocate made prayer 1 moot, but the strike-out prayer remained live and was granted.

p. 2

Legal principles established

#
  • Once a retainer is established, an advocate should not act for two or more clients with conflicting interests

Court orders

#
  1. 1.The Notice of Motion dated 28.04.2026 filed by Messrs W. Mireri Advocate is struck out as it poses a potential conflict of interest
  2. 2.The Respondents in the application are at liberty to pursue the services of another counsel other than Ms. Mireri, and file the application afresh
  3. 3.There shall be no orders as to costs

Authorities

#

Cases cited (1)

  • King Woolen Mills Ltd Vs. Kaplan Stratton Advocates
    1993
Jurisdiction invoked
Inherent jurisdiction of the court over conduct of advocates appearing before it (not expressly cited in the judgment)

Key timeline

#

Practical implications

#

Frequently asked questions

#

Cite this brief

#

Cite this brief

Caselaw, "Rosa v Koriko & 3 others (Environment and Land Case 4 of 2021) [2026] KEELC 3400 (KLR)", Case Analysis (2026). Not stated in judgment. Source: https://new.kenyalaw.org/akn/ke/judgment/keelc/2026/3400/eng@2026-06-08

Suggested citation format for research notes or client memos. Always verify the original judgment before relying on any point.