"The evidence of alcohol dependence is, in my judgment, weak and unsupported by expert evidence."
"(1) A person ('D') who kills or is a party to the killing of another is not to be convicted of murder if D was suffering from an abnormality of mental functioning which - (a) arose from a recognised mental condition, (b) substantially impaired D's ability to do one or more of the things mentioned in subsection (1A), and (c) provides an explanation for D's acts and omissions in doing or being a party to the killing. (1A) Those things are - (a) to understand the nature of D's conduct; (b) to form a rational judgment; (c) to exercise self-control. (1B) For the purposes of subsection (1)(c), an abnormality of mental functioning provides an explanation for D's conduct if it causes, or is a significant contributory factor in causing, D to carry out that conduct. (2) On a charge of murder, it shall be for the defence to prove that the person charged is by virtue of this section not liable to be convicted of murder."
"... it will be for the jury to decide whether the accused was suffering from an abnormality of mental functioning, whether this arose from a medical condition, whether it substantially impaired his ability to do one of the three things mentioned in subsection (1A) and whether it caused, or was a significant contributory factor in causing the defendant to carry out the killing. Medical evidence will, however, be relevant to all these issues, particularly the first three (as to the second, it will be critical). As before ... it is submitted that the jury will not be bound to accept the medical evidence if there is other material before them which, in their good judgment, conflicts with it and outweighs it."