andy-hughes, //As I understand it, he was prosecuted for the crimes for which their was sufficient evidence to produce a reasonable chance of conviction, which is the way the CPS operates.//
Your understanding may be awry.
// lawyer Richard Scorer explained how Worboys was only prosecuted for 12 complainants out of "some 105 in total whom, we understand made complaints to the police"……Mr Scorer also wrote Worboys' victims were told their attacker would "not be coming out for a long time" and therefore another trial was "not necessary".
"To the extent that this was the CPS's expectation at the time, this has clearly not happened and this justification for not bringing further prosecutions has fallen away,"//
http://www.bbc.co.uk/news/uk-england-london-42650813
Had he been prosecuted for all his crimes, as he should have been, we wouldn't, at this time, be discussing his release.