Coroners and Justice Bill

That is a fair point, but there is another way of looking at this. When there is an indeterminate sentence and the release date is ultimately dependent not on the trial judge but on those who are assessing whether the person constitutes a risk, the natural attitude of those who make that decision is to guard their own back, and the result can be that many people are held in prison much longer than the index for offences justifies and much longer than a proper assessment of the risk would also justify.