Her Majesty’s Inspectorate of Constabulary (HMIC) in England identified several lost opportunities to put Jimmy Savile on trial as police forces failed to share information and in some cases actively rejected disclosures and attempts to report over the years with one allegation starting from the mid-1950s before the previously recorded 1963 start time to Savile’s known crimes.
The BBC has the story on the HMIC report here and Yahoo have aggregated Sky News’s report here.