Breach of Duty in UK Law

Equitable compensation for breach of the duty of skill and care resembles common law damages in that it is awarded by way of compensation to the plaintiff for his loss. There is no reason in principle why the common law rules of causation, remoteness of damage and measure of damages should not be applied by analogy in such a case.

A fiduciary is someone who has undertaken to act for or on behalf of another in a particular matter in circumstances which give rise to a relationship of trust and confidence. A fiduciary must act in good faith; he must not make a profit out of his trust; he must not place himself in a position where his duty and his interest may conflict; he may not act for his own benefit or the benefit of a third person without the informed consent of his principal.

A fiduciary who acts for two principals with potentially conflicting interests without the informed consent of both is in breach of the obligation of undivided loyalty; he puts himself in a position where his duty to one principal may conflict with his duty to the other: see Clark Boyce v Mouat [1994] 1 AC 428 and the cases there cited. This is sometimes described as "the double employment rule". Breach of the rule automatically constitutes a breach of fiduciary duty.

You must take reasonable care to avoid acts or omissions which you can reasonably foresee would be likely to injure your neighbour. The answer seems to be persons who are so closely and directly affected by my act that I ought reasonably to have them in contemplation as being so affected when I am directing my mind to the acts or omissions which are called in question.

He can do so if he can show that some fact relevant to his right of action has been concealed from him either by a positive act of concealment or by a withholding of relevant information, but, in either case, with the intention of concealing the fact or facts in question.

First, it is a sound principle that where a person has, by breach of a duty of care, created a risk, and injury occurs within the area of that risk, the loss should be borne by him unless he shows that it had some other cause.

In my judgment, the employee must in all cases prove his case by the ordinary standard of proof in civil actions: he must make it appear at least that on a balance of probabilities the breach of duty caused or materially contributed to his injury.