My Lords, in the light of the very full observations made by the noble Lord, Lord Thomas of Gresford, I want to add three observations. First, over the years the practice of sentencing has become much more complicated and difficult. From the early 1980s onward, the way in which you sentence in the criminal courts has been the subject of guidance from the Lord Chief Justice and the Court of Appeal Criminal Division. It was then followed by the Sentencing Advisory Panel and the Sentencing Guidelines Council. Now it is contained in very complicated and detailed documents drafted by the Sentencing Council.
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Secondly, that means of determining sentence has meant that those who sit in the ordinary courts as lay magistrates have to undergo significant training, so that they are familiar with the detailed guidelines and know how to apply them.
My third point is simply that, in my experience of sitting on court martial appeals and knowing very well the Judge Advocates-General, I have always thought that they had an intimate knowledge of how the service system worked; that is the sole justification for keeping it separate. Therefore, you have a specialist judge familiar with the entirety of the operation of the Armed Forces, which makes things seem much fairer to all concerned—and these days one is concerned not merely with the defendant, but with the wider public perception that sentencing is carried out by a judge well capable of absorbing and dealing with the guidelines and who is intimately familiar with the service background to the case.