The duty in context
No conflict between current clients client
The lawyer must not act for two or more current clients with conflicting interests except within defined exceptions with each client's informed consent and protection of confidentiality.
How the codes express this duty
E&W Solicitors SRA Principles & Code CCS 6.2 strong 824 cases
6.2 You do not act in relation to a matter or particular aspect of it if you have a conflict of interest or a significant risk of such a conflict in relation to that matter or aspect of it, unless: (a) the clients have a substantially common interest ...; or the clients are competing for the same objective, and the conditions below are met ...
SRA Code of Conduct for Solicitors, RELs and RFLs · 2019 · archived copy · official source ↗
E&W Barristers BSB Handbook rC21.3; gC69 strong 32 cases
rC21.3 there is a conflict of interest, or real risk of conflict of interest, between the prospective client and one or more of your former or existing clients in respect of the particular matter unless all of the clients who have an interest in the particular matter give their informed consent to your acting in such circumstances;
BSB Handbook Part 2: Code of Conduct · 5.0 · archived copy · official source ↗
Cayman Islands Legal Services Code 2026 R.7.1; R.7.2; R.7.3 strong
Except in the limited circumstances dealt with in R.7.3, an attorney-at-law or a recognised law entity shall not act if there is a conflict of interests or a significant risk of a conflict... may act, in non-contentious matters, for more than one client whose interests conflict in the matter only with the informed written consent of all clients.
Cayman Islands Legal Services Code of Professional Conduct · 2026 · archived copy
AU Solicitors Solicitors' Conduct Rules Rules 11.1; 11.2; 11.3; 11.4 strong 134 cases
11.1 A solicitor and a law practice must avoid conflicts between the duties owed to two or more current clients. 11.2 If a solicitor or a law practice seeks to act for two or more clients in the same or related matters where the clients' interests are adverse and there is a conflict or potential conflict... the solicitor or law practice must not act, except where permitted by Rules 11.3 and 11.4.
Australian Solicitors' Conduct Rules · 2015 (June 2026 compilation) · archived copy · official source ↗
AU Barristers Uniform Barristers Rules r113 strong 39 cases
A barrister who is briefed to appear for two or more parties in any case must determine as soon as possible whether the interests of the clients may, as a real possibility, conflict and, if so, the barrister must then return the brief for: (a) all the clients in the case of confidentiality to which Rule 108 would apply; or (b) one or more of the clients so as to remove that possibility of conflict.
Legal Profession Uniform Conduct (Barristers) Rules · 2015 (as amended 14 May 2025) · archived copy · official source ↗
IE Solicitors Law Society Guide Ch3 — General; Conflict of interest between two clients; Non-conveyancing transactions strong 48 cases
A solicitor should not act in a matter, or any part of a matter, where there is a conflict of interest... If a solicitor, acting with ordinary care, would give different advice to different clients about the same matter, there is a conflict of interest, and the solicitor should not act for both clients... Where clients consent to one firm representing both parties to a non-conveyancing transaction, the law requires that each client gives informed consent.
Solicitor's Guide to Professional Conduct (Law Society of Ireland) · 4th ed. (2022) · archived copy · official source ↗
IE Barristers Bar Code of Conduct Rule 3.16; Rule 10.10 partial 48 cases
In cases involving several parties, Barristers on receipt of instructions for more than one of such parties should consider whether or not any conflict arises as between the individual interests of each of the clients and they shall advise the solicitor as to whether any of the clients should be separately advised and represented by a Barrister or solicitor. ... Barristers may appear for more than one defendant in a criminal trial provided they have satisfied themselves that there is no conflict of interest.
Code of Conduct for the Bar of Ireland · 2024 · archived copy · official source ↗
JM Attorneys Canons of Professional Ethics Canon IV(k); Canon IV(l); Canon IV(m) strong 133 cases
Subject to the provisions of Canon IV (l), an Attorney shall not accept or continue his retainer or employment on behalf of two or more clients if their interests are likely to conflict or if the independent professional judgment of the Attorney is likely to be impaired. (l) Notwithstanding the provisions of Canon IV (k), an Attorney may represent multiple clients if he can adequately represent the interests of each and if each consent to such representation after full disclosure of the possible effects of such multiple representation.
Legal Profession (Canons of Professional Ethics) Rules · 1978 (principal) · archived copy · official source ↗
JE Lawyers Law Society of Jersey Code R.6.1; R.6.3 strong
Except in the limited circumstances dealt with in R.6.3, a member or their firm must not act if there is a conflict of interests or a significant risk of a conflict... A member or their firm may act, in non-contentious matters, for more than one client whose interests conflict in the matter only with the informed written consent of all clients.
Law Society of Jersey Code of Conduct · 1 January 2017 · archived copy · official source ↗
ON Lawyers LSO Rules of Prof. Conduct r 3.4-2; r 3.4-3 strong
3.4-2 A lawyer shall not represent a client in a matter when there is a conflict of interest unless there is consent, which must be fully informed and voluntary after disclosure, from all affected clients and the lawyer reasonably believes that he or she is able to represent each client without having a material adverse effect upon the representation of or loyalty to the other client. [3.4-3 Despite rule 3.4-2, a lawyer shall not represent opposing parties in a dispute.]
Law Society of Ontario — Rules of Professional Conduct · current · archived copy · official source ↗
BC Lawyers BC Code r 3.4-2 strong 34 cases
A lawyer must not represent a client in a matter when there is a conflict of interest unless there is express or implied consent from all clients and the lawyer reasonably believes that he or she is able to represent each client without having a material adverse effect upon the representation of or loyalty to the other client.
Code of Professional Conduct for British Columbia (BC Code) · 2017 · archived copy · official source ↗
NZ Lawyers Conduct & Client Care Rules r 6.1 strong
A lawyer must not act for more than 1 client on a matter in any circumstances where there is a more than negligible risk that the lawyer may be unable to discharge the obligations owed to 1 or more of the clients.
Lawyers and Conveyancers Act (Lawyers: Conduct and Client Care) Rules 2008 · SR 2008/214 · archived copy · official source ↗
SCO Solicitors LSS Standards of Conduct B1.7 strong 56 cases
You must not act for two or more clients in matters where there is a conflict of interest between the clients or for any client where there is a conflict between the interest of the client and your interest or that of your practice unit.
Law Society of Scotland — Practice Rules 2011, Rule B1 (Standards of Conduct) · 2011 · archived copy · official source ↗
SG Lawyers Professional Conduct Rules 2015 r 20 (Conflict, or potential conflict, between interests of 2 or more clients) strong 13 cases
20 Conflict, or potential conflict, between interests of 2 or more clients
Legal Profession (Professional Conduct) Rules 2015 · 2015 · archived copy · official source ↗
HK Solicitors Solicitors' Guide Principle 9.01 strong
A solicitor or firm of solicitors must not accept instructions to act for two or more clients where there is a conflict or a significant risk of conflict between the interests of those clients.
Hong Kong Solicitors' Guide to Professional Conduct (Volume 1) · current · archived copy · official source ↗
HK Barristers Bar Code of Conduct para 10.14(a) strong
If after he has accepted the brief or instructions on behalf of more than one lay client, there is or appears to be a conflict or a risk of conflict between the interests of any one or more of such clients, he must not continue to act for any client unless all such clients give their consent to his so acting and he can do so without embarrassment.
Code of Conduct of the Bar of the Hong Kong SAR · 2018 · archived copy · official source ↗
Cases dealing with this duty
1,286 decisions · link basis: found breached = a tribunal finding; rule cited = the mapped provision is cited in the decision; text match = high-precision text pattern
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Zeeshan Saqib Mian
Breaches, Dishonesty, Lack of Integrity, Recklessness, SRA Principles 2011
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Gordon Mcpherson Keir
Account Rules breaches, Breaches, Code of Conduct for Firms 2019, Code of Conduct for Solicitors, REL's & RFL's 2019, Dishonesty, Lack of Integrity, Solicitors Accounts Rules 2011, Solicitors Accounts Rules 2019, SRA Pr…
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Kieran Ferguson
Breaches, Code of Conduct for Solicitors, REL's & RFL's 2019, Dishonesty, Lack of Integrity, SRA Principles 2019
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Matthew Moss
Breaches, Code of Conduct for Solicitors, REL's & RFL's 2019, Dishonesty, Lack of Integrity, SRA Principles 2019
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Julian Condliffe
Breaches, Code of Conduct 2011, Code of Conduct for Firms 2019, Code of Conduct for Solicitors, REL's & RFL's 2019, Dishonesty, Lack of Integrity, Solicitors Accounts Rules 2019, SRA Principles 2011, SRA Principles 2019
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Elizabeth Forrest
Breaches, Code of Conduct 2011, Code of Conduct for Solicitors, REL's & RFL's 2019, Lack of Integrity, SRA Principles 2011, SRA Principles 2019
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Richard Jefferies
Authorisation of Individuals Regulations 2019, Breaches, Code of Conduct for Solicitors, REL's & RFL's 2019, Dishonesty, Lack of Integrity, Solicitors Accounts Rules 2019, SRA Principles 2019
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Habibur Choudhury; Archstone Solicitors Limited
Code of Conduct for Firms 2019
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Paul Ignatius Boylan
In 2018, the Practitioner breached his fundamental duties to act in his client’s best interests in breach of ASCR 4.1.1 and failed to avoid any compromise to his integrity and professional independence in breach of ASCR…
Multiple Disciplinary Action Fine Reprimand View decision -
Mark Grenville Davies
Code of Conduct 2011, Code of Conduct for Solicitors, REL's & RFL's 2019, Dishonesty, Solicitors Accounts Rules 2011, Solicitors Accounts Rules 2019, SRA Principles 2011, SRA Principles 2019
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Sarinjit Singh Bahia
Account Rules breaches, Code of Conduct 2011, Code of Conduct for Solicitors, REL's & RFL's 2019, Dishonesty, Lack of Integrity, Misappropriation of Client Account, Solicitors Accounts Rules 2019, SRA Principles 2011, S…
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Michael Saul Menkes
Rule 3-7.1 Consent Agreement
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Darren Shaw
Solicitors Act 1974
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Louisa Frances Clapton
Breaches, Code of Conduct for Solicitors, REL's & RFL's 2019, Dishonesty, SRA Principles 2019
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Robert Mannering Sedgwick
Breaches, Code of Conduct 2011, SRA Principles 2011, SRA Principles 2019
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Nicole Tam
Rule 3-7.1 Consent Agreement
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Alexander William Bruce Lee
Breaches, Code of Conduct 2011, SRA Principles 2011
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Darren Paul Kruse
Between December 2020 and March 2021, the Practitioner failed to act on client instructions and respond to client correspondence, in breach of the following South Australian Legal Practitioners Conduct Rules: • to act i…
Multiple Disciplinary Action Fine Order to apologise Reprimand View decision -
Darren Paul Kruse
Between August 2021 and November 2021, the Practitioner failed to act on client instructions and respond to client correspondence, in breach of the following South Australian Legal Practitioners Conduct Rules: • to act …
Multiple Disciplinary Action Fine Order to apologise Reprimand View decision -
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Clare Elizabeth Forster
Code of Conduct for Solicitors, REL's & RFL's 2019, SRA Principles 2019
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Rajesh Soni
Rule 4-29 Admission and Undertaking to the Discipline Committee
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Matthew Thomas Parish
Breaches, Code of Conduct for Solicitors, REL's & RFL's 2019, SRA Overseas Principles, SRA Principles 2019
Duty classification does not yet cover every jurisdiction (Ontario, New Zealand and Singapore decisions are indexed but not yet duty-classified), so counts here understate those corpora.