The bringing to an end of a relationship of principal and agent. Termination may occur in the following ways: agreement to terminate (Danby v Coutts & Co (1885) 29 Ch D 500); reasonable notice of revocation given by the principal (Martin-Baker Aircraft Co Ltd v Canadian Flight Equipment Ltd [1955] 2 QB 556, 2 All ER 722); or notice of revocation given by the agent to the principal and accepted by the principal. It may also occur by operation of law, which includes: completed performance by the agent (Bell v Balls [1897] 1 Ch 663); the expiration of the time for which the agent was appointed; the death of either the principal (Pool v Pool (1889) 58 LJP 67) or the agent (Friend v Young [1897] 2 Ch 421); the insanity (Yonge v Toynbee [1910] 1 KB 215 (CA)) or bankruptcy (Markwick v Hardingham (1880) 15 Ch D 339 (CA)) of a principal; the death, bankruptcy, or mental incapacity of the agent (Re Overweg; Haas v Durant [1900] 1 Ch 209); the principal becoming an enemy alien (Hugh Stephenson & Sons Ltd. v Aktiengesellschaft Fur Carton-Nagen-Industrie [1918] AC 239 (HL)); the subject matter of the agency becoming illegal or being destroyed; and the performance of the agency becoming impossible or illegal. Determination does not affect accrued rights. An agent has a right to be indemnified for acts done before, but the liability for which crystallises after, determination: Read v Anderson (1884) 13 QBD 779 (CA). See also Agency; Agent; Power of attorney; Principal; Special agent.
致使主事人及代理人的關係終止。可在下列的情況終止關係：協議終止 (Danby v Coutts & Co (1885) 29 Ch D 500)；由主事人發出合理的撤銷通知 (Martin-Baker Aircraft Co Ltd v Canadian Flight Equipment Ltd [1955] 2 QB 556, 2 All ER 722)；由代理人向主事人發出撤銷通知，並獲主事人接納。亦可憑藉法律的施行終止關係，包括代理人已完成履行 (Bell v Balls [1897] 1 Ch 663)；代理人獲委任的限期屆滿；主事人 (Pool v Pool (1889) 58 LJP 67) 或代理人 (Friend v Young [1897] 2 Ch 421)去世；主事人精神錯亂(Yonge v Toynbee [1910] 1 KB 215 (英國上訴法院)) 及破產(Markwick v Hardingham (1880) 15 Ch D 339 (英國上訴法院)) ；代理人去世、破產或心智上無行為能力(Re Overweg; Haas v Durant [1900] 1 Ch 209)；主事人成為敵國人民(Hugh Stevenson & Sons Ltd v AG fÜr Cartonnagen-Industrie [1918] AC 239 (上議院))；代理的標的事項變成非法或被破壞；及代理不可能履行或履行屬於非法。終止並不影響己產生的權利。代理有權就之前作出的行為獲得彌償，但有關的法律責任在終止後即確立：Read v Anderson (1884) 13 QBD 779（英國上訴法院）。另見 Agency; Agent; Power of attorney; Principal; Special agent。

• Usury
• Utility
• Utility of conduct
• Utter
• Vacant possession
• Vacation
• Vacation sittings
• Validity of legislation
• Valuable consideration
• Valuation
• Valuation clause
• Valuation of trading stock
• Value
• Valued policy
• Valuer
• Value received
• Value surviving
• Vandalism
• Variance
• Variation
• Variation of rights
• Variation of works
• Variation order
• Vasectomy
• Vehicle