The duty of loyalty is a fiduciary obligation requiring a person in a position of trust to act solely in the best interests of the party they serve. It prevents fiduciaries from placing themselves in situations where personal interests conflict with their responsibilities. The rule is strict because trust and confidence are central to fiduciary relationships.
The duty of loyalty commonly applies to trustees, company directors, solicitors, and agents who manage affairs on behalf of others. A fiduciary must not make unauthorised profits, exploit confidential information, or allow personal interests to influence decision-making. In Keech v Sandford (1726), a trustee renewed a lease in his own name after the landlord refused to renew it for the trust, and the court required him to hand over the benefit because fiduciaries must avoid even the possibility of conflicting interests. Courts enforce the duty strictly regardless of whether the fiduciary acted honestly or whether the beneficiary suffered actual loss. The purpose is preventative: maintaining absolute loyalty and confidence in fiduciary relationships. Remedies often include an account of profits, constructive trusts, or equitable compensation where the breach causes financial harm.
Explore our Tort Law Notes for deeper case law, examples, and revision tips.