However, minimum sentencing guidelines were changed following successful appeals earlier this year by Foye and paedophile Morris Petch.

BBC: Robert Foye

In 2011 rapist Robert Foye and paedophile Morris Petch challenged the way their minimum sentences had been calculated and saw them halved.

BBC: Criminal Cases Bill debate 1

In March, following an appeal by Foye and Petch, judges overruled previous guidelines for setting the punishment part of discretionary life sentences and orders for lifelong restriction.

BBC: Robert Foye