"You may think the real issue in this case is intent. In this case you must be sure, if you are to convict, that the defendant intended to cause really serious bodily harm to Mr Duffus. You can only decide what her intention was by considering all the relevant circumstances and in particular what she did, and what she said about what had happened on that occasion. If you think the serious injury which Mr Duffus suffered to his face was accidental, or might have been accidental, then you must acquit. You can only convict if you are sure the defendant intended to cause really serious harm to Mr Duffus."
"Of course I remind you that the question of self-defence arises in this case is the reason why the defendant held a knife at all. Her defence in her case is the question of accident. She says this injury was an incident. There was a struggle and in the course of that struggle the injury was caused and the injury was not deliberate. That is her defence."
"In a trial on indictment any obvious and viable alternative verdict should ordinarily be left to the jury if there were evidence to support it irrespective of the parties' wishes."
"It is, in our view, particularly important that this is done where the offence charged requires proof of a specific intent and the alternative offence does not. Even then there may be circumstances where the issue of specific intent does not truly arise. For example, if a man is shot at point-blank range in the head and the defence is simply that the defendant was not present, there is no requirement on the judge then to leave the alternative of manslaughter by way of killing without the necessary intent for murder. However, there will be cases, as Coutts recognised, where it is necessary to leave the lesser offence as an alternative to avoid the dangerous situation where the jury is faced with the stark choice of convicting for the serious offence or acquitting altogether. That may give rise to a miscarriage of justice."