"A person who pursues a course of conduct in breach of section 1 is guilty of an offence."
"(1) A person must not pursue a course of conduct -- (a) which amounts to harassment of another, and (b) which he knows or ought to know amounts to harassment of the other. (2) For the purposes of this section, the person whose course of conduct is in question ought to know that it amounts to harassment of another if a reasonable person in possession of the same information would think the course of conduct amounted to harassment of the other. (3) Subsection (1) does not apply to a course of conduct if the person who pursued it shows -- (a) that it was pursued for the purpose of preventing or detecting crime, (b) that it was pursued under any enactment or rule of law or to comply with any condition or requirement imposed by any person under any enactment, or (c) that in the particular circumstances the pursuit of the course of conduct was reasonable."
"As a matter of public policy, it seems to us essential to limit the defence of duress by means of an objective criterion formulated in terms of reasonableness."
"The Crown having conceded that the issue of duress is open to the appellant and was raised on the evidence, the correct approach on the facts of this case would have been as follows: (1) Was the defendant, or may he have been, impelled to act as he did because, as a result of what he reasonably believed [another] had said or done, he had good cause to fear that if he did not so act [that other] would kill him, or (if this is to be added) cause him serious physical injury? (2) If so have the prosecution made the jury sure that a sober person of reasonable firmness, sharing the characteristics of this defendant, would not have responded to whatever he reasonably believed [that other] said or did by taking part in the killing?The fact that a defendant's will to resist had been eroded by the voluntary consumption of drink or drugs or both is not relevant to that test."