A sole director who pursues a transaction involving significant personal benefits (such as employment and shareholding in a new entity) in circumstances where the transaction will change control of the company and dilute the existing shareholder's interest to nil is in breach of fiduciary duty if they do not obtain the informed consent of the company's shareholder, regardless of the director's subjective belief that the transaction is in the company's best interests. However, proof of loss of a valuable commercial opportunity requires establishing on the balance of probabilities that the opportunity included a real or substantial (not speculative) prospect of agreement, even where that assessment involves hypothetical past events concerning third party conduct.
The full text is available to signed-in members, including the 27 later cases that cite this judgment.
1 of the 27 citing cases carry a classified treatment. How each court treated it is available to signed-in members.