“There are three points to be enquired into:- first, whether the prisoner is mute of malice or not; secondly, whether he can plead to the indictment or not; thirdly, whether he is of sufficient intellect to comprehend the course of the proceedings in the trial so as to make a proper defence - to know that he might challenge any of you to whom he may object - and to comprehend the details of the evidence, which in a case of this nature must constitute a minute investigation.”
“He is of sufficient intellect to comprehend the course of proceedings on the trial, so as to make a proper defence – to know that he might challenge (the jurors) to whom he may object – and to comprehend the details of the evidence, which in a case of this nature must constitute a minute investigation, upon this issue, therefore, if you think that there is no certain mode of communicating details of the trial to the prisoner, so that he can clearly understand them, and be able properly to make his defence to the charge; you ought to find that he is not of sane mind.”
“As to the word "comprehend", we do not think that this word goes further in meaning than the word "understand". In our judgment the direction…is not intended to cover and does not cover a case where the prisoner can plead to the indictment and has the physical and mental capacity to know that he has the right of challenge and to understand the case as it proceeds.”
“Assuming that the defendant is legally represented (and in cases like these, he will normally be represented by leading and junior counsel, as well as solicitors) his legal representatives are the persons best placed to decide whether to raise the issue of fitness to plead, and indeed to seek medical assistance to resolve the problem. There is a separate and distinct judicial responsibility to oversee the process so that if there is any question of the defendant's fitness to plead, the judge can raise it directly with his legal advisers. Unless there is contemporaneous evidence to suggest that notwithstanding his plea and the apparent satisfaction of his legal advisers and the judge that he was fit to tender it, and participate in the trial, it will be very rare indeed for a later reconstruction, even by distinguished psychiatrists who did not examine the appellant at the time of trial, to persuade the court that notwithstanding the earlier trial process and the safeguards built into it that the appellant was unfit to plead, or close to being unfit or that his decision to deny the offence and not advance diminished responsibility can properly be explained on this basis. The situation is, of course, different if, as in Erskine, serious questions about his fitness to plead were raised in writing or expressly before the judge at the trial.”