Well ... I must say I'm very surprised.  I can't see why the jury were out so long if there was no element of doubt.

As I understand it, there was no evidence apart from the accusers' complaints.  No one else had seen any of the assaults, even though some of them happened in crowded places.  None of the accusers told anyone that anything had happened, either at the time or later, until the police started investigating other famous people.  None of them recorded events in diaries they kept at the time.  No evidence was put forward that others close to them noticed anything was amiss. 

The police are heralding it "the biggest scalp yet".  That misses the point, surely, if it is really about justice for victims.