For example, where one person appoints a person to a position which carries with it agency-like powers, those who know of the appointment are entitled to assume that there is apparent authority to do the things ordinarily entrusted to one occupying such a position.
This is sometimes termed "agency by estoppel" or the "doctrine of holding out", where the principal will be estopped from denying the grant of authority if third parties have changed their positions to their detriment in reliance on the representations made.
[2] In the case of Watteau v Fenwick,[3] Lord Coleridge CJ on the Queen's Bench concurred with an opinion by Wills J that a third party could hold personally liable a principal who he did not know about when he sold cigars to an agent that was acting outside of its authority.
3); co-extensively, principals are required to act “dutifully and in good faith” in their “relations” with their commercial agents (Reg 4).
Though there is no statutory definition of this obligation to act “dutifully and in good faith”, it has been suggested that it requires principals and agents to act "with honesty, openness and regard for the interests of the other party to the transaction".