His Honour then added:
"The accessory's intention to assist or encourage the principal offender must be based upon that knowledge. … Although some of the older authorities suggest that the accused need be aware of only the physical acts done by the principal offender, it is now clear that he must be aware also of the existence of any state of mind on the part of the principal offender which must be established by the Crown to show that the crime was committed by him."
80 The focus for the purpose of the present argument is the need for the Crown to prove that the alleged aider and abettor knew, not only of the essential facts and circumstances that establish the physical commission of the crime by the principal offender, but also of that offender's state of mind or intention - that is, that that offender intended to kill or cause grievous bodily harm. This is an essential element in proving the guilt of that offender. That element was absent from the written direction. It was not absent from the oral direction first extracted above, where (in that part of the passage that I have italicised) his Honour carefully told the jury that they had to be satisfied beyond reasonable doubt that the appellants knew all of the essential factual circumstances that had to be proved by the Crown to show that the crime was committed by the principal offender, including that the appellants knew that the principal offender intended to kill or inflict grievous bodily harm on Assad Barakat. It must here be re-emphasised that the relevant intention is that of the principal offender, not the person accused of aiding and abetting. Because liability in this sense is derivative, depending upon the established guilt of the actual perpetrator, proof of that person's intention to kill or cause grievous bodily harm is essential; as is proof that the person charged as accessory knew of that person's intention. That is not to say that the intention of the person charged as accessory is irrelevant: it is, of course, necessary for the Crown to prove that. But that intention is to do the act or acts that encourage, aid and/or abet the principal offender - with knowledge that the principal offender intends to kill or cause grievous bodily harm.
81 Whether the correct oral direction given is sufficient to overcome the deficiency in the written direction is one of the issues raised by this ground of appeal.
82 But the question is not as simple as that. It was also argued on behalf of the appellants that the oral direction secondly extracted above had further deficiencies, and was apt to create confusion. That is for this reason. The relevant part of this oral direction was that the appellants were guilty of murder:
"… if you are satisfied that the particular accused was an aider and abettor, that is, a person present at the time encouraging the person doing the stabbing and ready to assist if required with the intention that the deceased should be killed or receive grievous bodily harm …"
83 The flaw in this direction, counsel argued, lies in that part of the direction that I have emboldened, and is that when read grammatically and logically, the intention in question is the intention, not of the principal offender, but of the person accused as accessory - that is, the direction focused upon an intention in the person alleged to be an aider and abettor (or accessory, or principal in the second degree), that the victim be killed or caused grievous bodily harm, but not upon the intention of the person alleged to be the actual perpetrator and the knowledge in the alleged aider and abettor of that intention. As I have indicated above, the intentions it is necessary for the Crown to prove are not co-extensive: in the case of the principal offender, the intention is to kill or cause grievous bodily harm, in the case of a person accused as accessory, the intention necessary to be proved is to encourage, aid and/or assist the principal offender to achieve that object. A separate element, also relevant to state of mind but not directly going to intention, is knowledge of the principal offender's intention.
84 Thus, the argument went, on only one of three occasions when the jury was directed on this topic was the direction without defect. (It was accepted that the oral direction that included the reference to knowledge in the accused of the intention of the actual perpetrator was correct.)
85 It was not suggested that either the written, or the second oral, direction was erroneous or misleading in any respect except by omission of express reference to the need for the Crown to prove the appellant's knowledge of what was the intention of the actual perpetrator. And that was explicitly covered in the first, correct, oral direction. One question posed on behalf of the appellants is whether the correct oral direction was sufficient to fill the gap in the written direction and the gap in the later oral direction. That presupposes that relevant error has been established. That presupposition itself does not stand up to scrutiny.
86 It is to be assumed that juries absorb and adhere to the directions they are given, both oral and written. The jury was clearly told (orally) that they could not find the appellants guilty of murder unless satisfied that they were aware of the intention of the actual perpetrators. It was not necessary for that to be repeated. If it were necessary to decide whether the correct oral direction was sufficient to overcome deficiencies in the second oral, and the written directions, I would, in the circumstances of this case, consider that it was. But, for reasons given below, I do not think it is necessary to reach that point.
87 The directions must be read in the light of the circumstances of the case. The essence of the written direction on liability as principal in the second degree was that the Crown had to establish that either accused was present, encouraging the principal offender and ready to render assistance if required. That requires some attention to what, on the Crown evidence, the principal offender was doing that that accused was encouraging, and prepared to render assistance in - it was using an implement to stab Assad Barakat. It could hardly be contemplated that presence, encouraging that activity, and preparedness to render assistance if required, did not entail knowledge that the principal offender had the requisite intention, that is, to kill or cause grievous bodily harm. Put another way, proof that either accused was present, encouraging and prepared to render assistance to the principal offender in stabbing Assad Baraket necessarily (in the circumstances of this case) implied proof that that accused knew that the principal offender intended to kill or cause grievous bodily harm.
88 Juries must be credited, as they traditionally are, with common sense. No jury could possibly have concluded that either appellant was encouraging the stabbing of Assad Barakat, and ready to render assistance if required, without also concluding that the appellant knew that the person wielding the implement intended to kill Assad Barakat or cause him grievous bodily harm. Any technical deficiency in the directions is of no moment, and certainly could not conceivably have given rise to a miscarriage of justice.
89 It is now convenient to deal with an additional criticism of the summing up. That concerns the (second) oral direction, concerned with joint criminal enterprise. I repeat the relevant part of that direction. It was:
"…or thirdly, if you are satisfied beyond reasonable doubt that the particular accused was a participant in a joint criminal enterprise to assault the deceased and kill him or cause him really serious physical injury; and in relation to that, the joint criminal enterprise is an agreement to take part in criminal activity. In the absence of expressed agreement it may be inferred from the circumstances and the actions of participants. Secondly, that the object of the joint enterprise was to kill or cause really serious physical injury may be established by the nature, ferocity, extent or other surrounding circumstances of, or the numbers involved in, the attack, or by you being satisfied that the particular accused contemplated that a knife or other weapon capable of inflicting grievous bodily harm would be used, or foresaw the possibility that such a knife or weapon might be used."