Ahluwalia, R v [1993] CA
Antoine (Pierre Harrison), R v (2000) HL
Byrne, R v (1960) CA
Di Duca, R v (1959) CA
Dietschmann (Anthony), R v 2001 CA
Dunbar, R v
[1958] CA
Egan, R v
[1992] CA
Fenton, R v
(1975) CA
Gittens, R v (1984) CA
Hendy, R v
[2006] CA
Hobson, R v (1997) CA
Lambert, R
v (R v Ali, R v Jordan) [2001] HL
Lloyd, R v
[1966] CA
Martin (Anthony Edward),
R v [2002] CA
O’Connell, R v [1997] CA
Price, R v (1971)
Reynolds,
R v (1988) CA
Rose, R v
(1961) PC
Sanders, R v (1991) CA
Sanderson, R v (1994) CA
Seers, R v (1985) CA
Sutcliffe, R v (1981)
Tandy, R v (1989) CA
Vinagre,
R v (1979) CA
Walton v The Queen (1978) PC
|
Ahluwalia,
R v [1993] CA |
[Diminished responsibility - Battered
Woman Syndrome – can amount to diminished responsibility]
D, subjected to 10 years of spousal violence
and degradation, threw petrol in her husband's bedroom and set it alight,
causing his death.
Held:
Lord Taylor CJ:
No evidence was adduced at trial that D
suffered from a post-traumatic stress disorder or 'Battered Woman
Syndrome'.
Note
The Court of Appeal admitted evidence,
quashing the murder condition on the basis of D's depressive condition. At
re-trial her plea of manslaughter by defence of diminished responsibility
was accepted.
Not guilty of murder |
|
Antoine (Pierre Harrison), R v (2000) HL |
^[Diminished responsibility - fitness to
plead – murder]
D aged 16 and another youth brutally murdered V aged 15, apparently as a
sacrifice to the devil. D appealed against the decision that he could not
raise a defence of diminished responsibility at a hearing under the
Criminal Procedure (Insanity) Act s4A(2), where he had been found
unfit to plead to murder by reason of his mental disability and where the
jury found that D had committed the act of murder.
Held: (1) The defence of diminished responsibility cannot be raised
in a hearing under s4A Criminal Procedure (Insanity) Act 1964
(2) On the wider question: the jury under s4A procedure need only prove
the actus reus of an offence. However the defence counsel may raise
objective evidence of the defences of mistake, accident or self-defence.
Appeal dismissed. |
|
Byrne, R v (1960) CA
 |
[Diminished responsibility - abnormality
of the mind impairing mental responsibility]
D strangled to death and then mutilated a young woman in a YWCA,
confessing to both in full. D raised the defence of diminished
responsibility. Since childhood he had suffered from perverted sexual
desires that created irresistible impulses. His acts were driven by one of
these impulses on the day in question.
Held: Diminished responsibility covers all the activities of the
mind. Abnormality of the mind does no have to be connected with madness.
Lord Parker CJ.
(1) To satisfy the requirements of this
defence under the Homicide Act 1957 s 2, D must demonstrate that he
suffered from an 'abnormality of the mind' arising from a
condition of arrested or retarded development of mind or any inherent
causes, or was induced by disease or injury; and that the said
abnormality substantially impaired his mental responsibility for his
acts in doing or being a party to a killing.
(2) An abnormality of the mind is to be
defined widely: 'a state of mind so different
from that of ordinary human beings that the reasonable man would term it
abnormal' and covering all cognitive aspects, from perception to
rationality and 'willpower'
Not guilty of murder by reason of
diminished responsibility. |
|
Di Duca, R v (1959) CA |
[Diminished responsibility - Intoxication
not sufficient]
No transcript available.
Held:
The transient effects of drink on the brain
might themselves be an injury, but this is doubted. |
|
Dietschmann (Anthony), R v
(2003) HL

Whole case, here |
^[Diminished responsibility -
voluntary consumption of alcohol can also be a cause of the killing]
D killed a man in a savage attack whilst he was very drunk. He was
also suffered from a mental abnormality, namely an adjustment disorder
which was a depressed grief reaction following the death of his aunt,
Sarah, with whom he had had a close emotional and physical relationship
and whom he (wrongly) believed had committed suicide because of her drug
problems.
Held: To benefit from the
finding of diminished responsibility, D does not have to show he would have
killed had he been sober.
Being intoxicated does not entitle D to the
benefit of the defence of diminished responsibility, the only factor which
the law recognises as capable of diminishing his mental responsibility is
the mental abnormality described by the expert witnesses.
Drink is only capable of amounting to
Diminished Responsibility if it either causes damage to the brain or
produces an irresistible craving so that consumption is involuntary (e.g.
alcohol dependence syndrome).
But:
Although drink cannot be taken into account as
something which contributed to his mental abnormality, it can contribute
to his behaviour.
"...if D satisfied you that, [ignoring the
drink], his mental abnormality substantially impaired his mental
responsibility for his fatal acts, you may find him guilty of
manslaughter.
If not, the defence of diminished
responsibility is not available to him."
This case also reversed the test in
Egan:
If D suffers from DR and when sober would
not kill yet when drunk kills; can he still use DR, answer, Yes.
In Egan the test the answer would have been
No.
A defendant seeking to use diminished
responsibility where he had been drinking does not have to show that
if he was sober
(a) he would have killed as he in fact did; and
(b) he would have been under diminished responsibility when he did so?
Appeal allowed remitted to Court of Appeal
who ordered a retrial. |
|
Dunbar, R
v [1958] CA |
[Diminished responsibility - burden of
proof rests on accused - a preponderance of probability]
D, killed an old lady after breaking into
her house to steal.
Held: The burden of proof on accused
of the defence of diminished responsibility was not as heavy as the burden
of proof on the prosecution and was the burden of showing a preponderance
of probability.
Guilty manslaughter. |
|
Egan, R v
[1992] CA |
^[Diminished responsibility -
voluntary consumption of alcohol can also be a cause of the killing]
D who had a mentality bordering on the subnormal, entered the home of an
elderly widow after a night of heavy drinking and attacked and killed her,
probably with intent to rob her.
It was clear that Egan was suffering from an
abnormality of mind which arose from one of the stated causes (whether
arising from a condition of arrested or retarded development of mind or
inherent causes or induced by disease or injury).
The difficulty was whether this abnormality
had substantially impaired his responsibility for his acts or whether it
was the effect of the abnormality in conjunction with the alcohol he had
consumed that had done so.
Held: A court should follow the
guidance of Professor JC Smith in his commentary on
R v Gittens [1984] and ask:
(i) Can the defendant prove that had he
not taken the alcohol he would nevertheless have still killed; and
(ii) Can he prove that he was suffering
from diminished responsibility at the time so as substantially to impair
his responsibility for the killing. Voluntary consumption of alcohol
must be ignored.
In other words, if the jury believe that but
for the voluntary consumption of alcohol he would not have killed, the
defence is lost.
Where the defendant is suffering from
alcoholism, the position may be different. This may constitute an
abnormality of mind induced by injury within s 2, but the voluntary
consumption of large quantities of alcohol will not.
Guilty murder
Dicta disapproved in
R v Dietschmann (2003)
Per curiam. The word “substantial”
should be approached in a broad commonsense way or that “substantial”
means more than some trivial degree of impairment which does not make any
appreciable difference to a person’s ability to control himself, but less
than total impairment |
|
Fenton, R v
(1975) CA |
^[Diminished responsibility - the effect
of alcohol can be discounted]
D had consumed a large quantity of drink. He drew a revolver and killed a
police officer and left the scene driving the police car. He went to a
club where he shot and killed three more people.
Held: One of 4 ingredients of D's abnormality of mind was alcohol
with a resulting state of disinhibition and possible confusion the absence
of any one of them the killings would probably never have taken place.
Even if the effect of alcohol was ignored,
the effect of the remaining factors was sufficient to cause a substantial
impairment of mental responsibility.
Approved in
R v Dietschmann [2003] |
|
Gittens,
R v (1984) CA
 |
^[Diminished responsibility - abnormality
of the mind – drink or drugs can be an effect - abnormality does not
have to be the sole cause of DR]
D was suffering from depression. During a visit home from hospital he
argued with his wife and beat her to death and then raped and killed his
stepdaughter. At the time of the offence he had been drinking and taking
drugs for depression.
Held: D can benefit from DR if the inherent causes like
depression would have caused him kill whether or not he took drugs or drank alcohol.
Guilty of manslaughter not murder
Approved in
Dietschmann
Therefore four points clearly emerge from
the judgment:
(i) Where a defendant suffers from an
abnormality of mind arising from arrested or retarded development of mind
or inherent causes or induced by disease or injury and has also taken
drink before the killing, the abnormality of mind and the effect of the
drink may each play a part in impairing the defendant's mental
responsibility for the killing.
(ii) Therefore the task for the jury is to
decide whether, despite the disinhibiting effect of the drink on the
defendant's mind, the abnormality of mind arising from a cause specified
in subsection 2(1) nevertheless substantially impaired his mental
responsibility for his fatal acts.
(iii) Accordingly it is not correct for the
judge to direct the jury that unless they are satisfied that if the
defendant had not taken drink he would have killed, the defence of
diminished responsibility must fail. Such a direction is incorrect because
it fails to recognise that the abnormality of mind arising from a cause
specified in the subsection and the effect of the drink may each play a
part in impairing the defendant's mental responsibility for the killing.
(iv) The direction given by the judge in
R v Turnbull (Launcelot) should not be followed.
|
|
Hendy, R v
[2006] CA |
^[Manslaughter
- diminished responsibility - effect of intoxication can be disregarded]
D stabbed and killed a complete stranger. D raised diminished
responsibility, there was evidence that alcohol, had played a part in the
killing.
Held: D did not have to show that if he had
been sober, he would still have killed the victim to benefit from
diminished responsibility.
Section 2(1) of the Homicide Act 1957 meant that, if - ignoring the effect
of the alcohol - D's abnormality of mind substantially impaired his mental
responsibility for his acts in doing the killing, the jury should find him
not guilty of murder but guilty of manslaughter.
R v Gittens [1984] QB is
correct. Dietschmann
was not ’new law’ but simply explained what the law had always been since
the 1957 Act was enacted and since
Gittens.
Guilty of manslaughter
Also
here |
|
Hobson, R v (1997) CA
|
^[Diminished responsibility – battered
woman syndrome recognised]
D stabbed her alcoholic and abusive partner to death in 1992, during an
argument. At the trial she claimed that she had acted in
self-defence, and there was a subsidiary issue on provocation.
Held: Two psychiatrists were of the opinion that D had been a
victim of battered woman syndrome, a condition not recognised in the
standard British classification of mental diseases until 1994, and
therefore (it was suggested) a condition not considered by British
psychiatrists at the date of the trial as capable of founding a plea of
diminished responsibility.
The Court of Appeal ruled that the evidence
should be received, and in the light of that decision the Crown did not
seek to support the conviction as safe. A retrial was ordered.
In addition, if the condition existed at the
time, it was material to the appellant’s characteristics in relation to
the defence of provocation under s 3 of the Act.
Retrial ordered |
|
Lambert,
R v [2001] HL
Whole case, here.
(R v Ali, R v Jordan) HL |
[Diminished
responsibility - burden of proof on D - does not conflict with HR
Convention]
D1 was convicted
of a drug offence. D1 and D2 were both convicted of murder, their claim of
diminished responsibility having failed. In relation to both the drug
offence and diminished responsibility the burden fell upon the defendant
to establish certain facts on the balance of probabilities.
Held:
Subject to certain well-established exceptions, the common law had
resisted any kind of burden of proof being placed upon a defendant.
Parliament, however, had created many exceptions to that general rule
which could require that the defendant do no more than satisfy an
evidential or persuasive burden. Article 6 had not been breached.
Guilty of
murder. |
|
Lloyd, R v
[1966] CA |
^[Diminished responsibility - substantial
impairment, more than minimal]
D strangled his wife. medical evidence was
that he suffered from reactive recurrent depressions, and his mental
responsibility was impaired by that abnormality to some extent, not to any
substantial degree - it was not as low as minimal but, on the other hand,
it was not substantial.
Held: What amounts to ‘Substantial’
impairment is:
(i) the jury should approach the word in a broad common sense way or
(ii) the word meant ‘more than some trivial degree of impairment which
does not make any appreciable difference to a person’s ability to control
himself, but it means less than total impairment’.
Guilty murder.
Followed in
Gittens, approved in
Egan. |
|
Martin (Anthony Edward),
R v [2002] CA

Whole
case here |
^[Diminished responsibility - fear of
burglary]
D shot two intruders who entered his Norfolk farm house in the middle of
the night. One was killed the other was seriously injured.
Because of past experience D believed his
house to be vulnerable to burglary, and he was in genuine fear for his
personal safety and that the firing of the gun was in lawful self-defence.
Held: Fresh medical evidence as
to the physical characteristics of the defendant was relevant to
diminished responsibility, because he suffered from a longstanding
paranoid personality disorder which could be classified as an abnormality
of the mind arising from inherent causes within the terms of s 2 of the
Act.
Guilty of manslaughter by reason of
diminished responsibility |
|
O’Connell, R v [1997] CA |
[Diminished responsibility - side effects of
illegal drugs not 'injury']
The transient side-effects of a legal drug,
which include disinhibition and loss of memory, cannot be characterised as
‘injury’ within the meaning of the 1957 Act s 2(1).
|
|
Price
(1971) The Times, 22 December 1971 (news item) |
[Diminished responsibility - "mercy
killing"]
D killed his terminally ill son by allowing
him to drown.
Held: Diminished responsibility is
available in cases of "mercy killing" where the dilemma causing the
accused to kill was linked with depression.
|
|
Reynolds,
R v (1988) CA |
[Involuntary manslaughter – diminished
responsibility - abnormality of the mind includes post-natal depression
and pre-menstrual tension]
No summary available
|
|
Rose, R v
(1961) PC |
^[Diminished
responsibility - impairment bordering on insanity, a misdirection]
D a prisoner serving sentence, stabbed to death an overseer who refused to
give him the key of a gate of the prison.
The trial judge referred to the case as a border-line case of sanity or
insanity, according to the M’Naghten rules.
Held: The
direction in terms of the M’Naghten rules, was wrong. The words (not that
of the M’Naghten rules) must be used in its broad popular sense.
Acquitted. |
|
Sanders, R v (1991) CA |
^[Diminished responsibility - jury to
examine whole evidence, not obliged to accept medical evidence in
isolation]
D killed his former partner by hitting her
on the head with a hammer. D was diabetic, lost sight in one eye.
substantial impairment of his other eye, unable to work, and was
depressed. V had formed a relationship with another man. After killing V
he attempted suicide.
Two psychiatrists agreed that D suffered
from an abnormality of mind (reactive depression) which substantially
impaired D's responsibility
The Crown did not accept that this had
substantially diminished the appellant's responsibility, even though the
medical evidence was uncontradicted.
Held: There were other circumstances to be considered, the
medical evidence, though it be unequivocal and uncontradicted, had to be
assessed in the light of the other circumstances on the evidence as a
whole.
Guilty murder. |
|
Sanderson, R v (1994) CA |
^[Involuntary manslaughter – diminished
responsibility - abnormality of the mind impairing mental responsibility]
D a drug addict had a violent argument with his girlfriend, whom he killed
by hitting her 100 times with a wooden object a cricked bat and a hockey
stick. Medical evidence established that D suffered from a paranoid
psychosis, arising from inherent causes: namely, his upbringing.
Held: A permissible cause of an abnormality of the mind includes
'any inherent cause', which covers functional mental illness as well as
organic or physical injury or disease of the body, including the brain.
"Brain" and "Mind" are not the same thing in law.
Guilty of manslaughter by diminished responsibility. |
|
Seers, R v (1985) CA |
^[Diminished responsibility – includes a
mind affected by severe shock - depression especially in cases of mercy
killings and PMT]
D stabbed his estranged wife and claimed diminished responsibility on
grounds of chronic reactive depression. The trial judge directed that for
the defence to be successful Seers had to be bordering on the insane.
Held: The judge’s direction was wrong. The required abnormality of
mind can cover severe shock or depression especially in cases of mercy
killings and pre-menstrual syndrome.
The test of borderline or partial insanity
had been appropriate in the case of R v
Byrne.
Guilty of manslaughter |
|
Sutcliffe, R v (1981) Boreham J |
[Diminished Responsibility – the public
interest - jury role]
Peter Sutcliffe, the ‘Yorkshire Ripper’ pleaded diminished responsibility
to 13 charges of murder. The medical reports were unanimous in suggesting
that he was a paranoid schizophrenic.
Held: The judge decided that it was in the public interest for the
jury to decide on the matter. The jury brought in verdicts of murder. This
reflects public reaction rather than any clear cut rule of law and it
illustrates rather well that in practice medical evidence alone may not be
sufficient to ensure the defence.
Guilty |
|
Tandy, R v (1989) CA
 |
[Diminished responsibility - abnormality
of the mind impairing mental responsibility - effects of alcoholism -
role of jury]
D, an alcoholic, had drunk nearly a bottle of vodka when she strangled her
11 yr old daughter. (She normally drank Vermouth or Barley wine),
Held: For a craving for drink to produce an ‘abnormality of mind’
induced by the disease of alcoholism, there had to be grossly impaired
judgement and emotional responses or the craving had to be such as to
render the first drink of alcohol of the day involuntary.
But, if the accused had simply not resisted
an impulse to drink she could not rely on the defence of diminished
responsibility, and if D took the first drink of the day voluntarily, the
whole of the drinking on that day was voluntary, and diminished
responsibility was not available to her.
Watkins LJ:
'If the alcoholism has reached the
level at which her brain had been injured by the repeated insult from
intoxicants so that there was gross impairment of her judgment and
emotional responses, then the defence of diminished responsibility was
available to her ... if her drinking was involuntary, then her
abnormality of the mind at the time of the act of strangulation was
induced by her condition of alcoholism.'
Guilty of murder. |
|
Vinagre, R v (1979) CA |
^[Diminished responsibility -
Othello syndrome - unfounded jealousy]
D was suffering from so called "Othello syndrome" a disease of the mind
caused by an unfounded suspicion that his wife was having an affair with a
policeman she had met at horse events.
Held:
Lawton LJ, was scathing in his opinion. He expressed displeasure at flimsy
evidence being presented as a defence
which was inaccurately and
picturesquely
called "Othello syndrome" by the
psychiatrists.
He said that
"Othello Syndrome" as a defence may have
entered modern psychiatric medicine, it is not one which appeals to the
Court of Appeal.
The defence of diminished responsibility
appears to have succeeded because the judge at first instance accepted the
plea.
Lord Lawton when on to
say that it is a kind of conduct against which wives ought to be protected
by the law. Before 1957 there would have been no question about it, this
man would have been found guilty of murder. He could not have had any
defence.
Diminished responsibility
should only be accepted when there is clear evidence of mental imbalance,
in this case there was not clear evidence of mental imbalance. There was
clear evidence of a killing by a jealous husband which, until modern
times. no one would have thought was anything else but murder.
Life imprisonment reduced to 7 years
Comment: If the wife had been having
an affair it would simply be a case of a jealous husband killing his wife.
Severe jealousy might be described as an
abnormality of mind but it does not arise from of an "inherent cause or
injury or disease".
Lawton LJ made it clear that "Othello
Syndrome" is a flimsy defence, and it is submitted that this is a rogue
decision by the judge at first instance who accepted the psychiatrists'
reports, and is unlikely to be seen again.
But see "jealousy as a characteristic" in
Provocation in
Weller (2003).
|
|
Walton v The Queen
(1978) PC (Barbados) |
[Diminished responsibility - abnormality
of the mind impairing mental responsibility]
D was driving with his girlfriend, who thought he was 'acting funny', when
he stopped the car. After she flagged down a car for assistance D shot and
killed a passenger in that car.
Held: Lord Keith:
'upon an issue of diminished
responsibility the jury are ... bound to consider not only the medical
evidence but also the evidence upon the whole facts and circumstances of
the case. These include the nature of the killing, the conduct of the
accused before, at the time of and after it and any history of mental
abnormality.'
The Privy Council refused to interfere with
the verdict of murder, even though there was medical evidence from the
defence supporting diminished responsibility and no contradictory medical
evidence from the prosecution. The jury were entitled to consider the
'quantity and weight' of the medical evidence and 'to consider not only
the medical evidence but the evidence on the whole facts and circumstances
of the case', and to conclude that 'the defence on a balance of
probabilities had not been established'. The approach in Walton was
followed in Sanders (1991).
Guilty of murder. |
|