[26] The effect of Gray is that the critical point for the jury to consider is whether the defender's actual state of belief, based on reasonable grounds, was that the defender could not preserve himself otherwise than by doing what he did. If that is made clear to the jury, Gray considers that further directions on the question whether the force was necessary for defence are otiose, and worse still, positively erroneous if they are seen as creating a further requirement of objective necessity. Other contrary views had earlier been expressed in this court[3] which were acknowledged in Gray. Mr Martin, for the Crown, submitted that there remains in s 271(2) an element of objective necessity. At this point it is enough to say that other views than that taken in Gray are reasonably open[4] and that reconsideration of Gray may be desirable. In the meantime however it should be recognised that the ratio in Gray is binding.