Loss of control was defined by the coroners and justice act 2009 as a loss of the powers of reasoning.
Qualifying trigger of serious violence under S.55(3)
D must have a genuine fear that he will be subjected to violence or that violence will be inflicted on a child or someone close to D. The fear does NOT have to be reasonable.
Qualifying trigger of things said or done under S.55(4)
Things said or done must amount to something of 'extremely grave nature' that causes D to loose self control and respond to the things said or done.
A-G Jersey and Holey - objective test
Would a reasonable person of D's sex and age and the same amount of mental tolerance, loose control in similar circumstances?
Ahlwalia - delayed response
D can be 'building up' to the act instead of a sudden response to the qualifying trigger.
Inabilities to claim the defence
Sexual infidelity, Revenge and incitement (provoking D)
Sentencing
If successful, D will have the drop down offence of voluntary manslaughter. If not, D is convicted of murder.