"Considering seriousness of the offence, your high culpability, your leading role in this offending and your continuing radicalisation, I have decided that in your case the reduction for your age should be in the region of 25 per cent of the sentence for an adult."
"The leading role that you took, the seriousness of what you intended to do - the presence of two knives amongst your equipment, your deep-rooted radicalisation, your difficulty in seeing that what you did was wrong, and your ongoing motivation to travel abroad to join others and participant in what you perceive to be humanitarian-motivation activities - lead me to the conclusion that there is a significant risk that you will commit further specified offences and by doing so you will cause serious physical or psychological harm to one or more people. In other words, you will try again and I judge that risk to apply to acts to this country as well as abroad. I have taken into account the need to protect the public along with the other factors I have mentioned in reducing this sentence by less than the 33 per cent to 50 per cent suggested in the Youth Guidelines. So, in your case there will be an extended sentence of detention to protect the public."
"... when calculating the notional determinate term which the offence calls for, it is not permissible to inflate it in order to bring the case within the statutory condition of a minimum term of at least two years. Nor is it permissible to inflate it because the defendant is a risk for the future. The reason for the first is that if the sentence were inflated simply in order to pass a sentence of imprisonment for public protection, that would immediately render the statutory condition of no effect, and the statutory condition is meant to have effect. The reason for the second bar is that it involves double counting the danger because that, in a case where a sentence of imprisonment for public protection is permitted, is catered for by the imposition of that kind of sentence. In other words, the very plain intention from the words of the statute provided for the courts by Parliament is that an indefinite sentence cannot be justified simply by the risk which the defendant presents. It must be reserved for offences which call for a substantial sentence of four years or more, irrespective of risk. Moreover, the same principle is implicit in section 153(2) of the 2003 Act, since that requires that any custodial sentence must be imposed for the shortest term within the permitted maximum which is commensurate with the seriousness of the offence or offences for which it is passed. There is no room for doubt that that is the law and it has rightly not been in question before us."