They committed the offence only due to threats of harm to their self or family, or someone close to them if they did not commit the offence
R v Hudson and Taylor
Threats must be of a certain degree of severity to be valid for the purposes of the defence- threats of death or serious physical injury only
R v McGrowther
Threats to damage or destroy property are not sufficient
Valderrama1985
If there are valid and invalid types of threat- the invalid ones can be ignored and valid ones put to the jury
Cole1994
Threats must relate to the offence charged
R v Hasan
Requirements are necessary:
Threat of death or serious injury
Must be towards D, their family, someone close to them or someone they feel responsible for the safety of
Whether D acted reasonably in response to the threat
Whether the threats related directly to the crime D committed
Could D have taken action to Avoid threat
Whether D exposed himself to the threat
R v Bowen
Would a sober and reasonable man have acted in the same way?
objective test
R v Graham
If D is drunk or on drugs they will still be compared to a sober man
R v Sharpe
This defence is not available for those who have voluntarily exposed themselves to the risk of threats nor to those who have failed to avail themselves of the opportunity to escape from the duress
R v Gill
Must also be no safe means of escape means of avoiding the threat
Murder?
Not an allowable defence for murder or attempted murder