The report also reveals how when he was in his early 20s, in the mid-1990s, Couzens was suspected of committing a “very serious sexual assault of a child barely in her teens”.
The sexual assault provided an “important link in the chain of events” leading up to the abduction, rape and murder of Miss Everard, the report said.
He was also accused of possessing indecent images of children, and in 2004 exposed himself towards a teenage girl in south London by driving past her while masturbating.
The offence was not reported at the time but the woman later came forward when she recognised Couzens in the media.
Rape allegations and indecent exposures
At some point between late 2006 and early 2007 Couzens is suspected of raping a woman at a singles night at a bar in east London. The victim again came forward after the murder of Miss Everard.
There was another allegation of rape in October 2019 which took place under a bridge in London.
In the summer of 2019, Couzens also sexually assaulted a man in a bar in Kent.
The complainant was in drag and wearing a blond wig when Couzens grabbed him inappropriately.
When the victim remonstrated with him, Couzens said he was a police officer and invited him outside to perform a sex act.
The man came forward to police following Couzens’ arrest for the kidnap, rape and murder of Miss Everard.
There were also a string of allegations of indecent exposures, some of which were reported to police but not fully investigated.
In November 2008 Couzens exposed himself to a woman in south London and while the offence was reported at the time no suspect was identified.
In 2015, while working for the Civil Nuclear Constabulary, Couzens again exposed himself but despite the victims providing police with his car registration, he was never arrested or charged.
The inquiry concluded that the failure to investigate this offence fully was a “red flag and a missed opportunity to disrupt or even prevent further offending by Couzens”.
‘Inadequate investigations’
Following the murder of Miss Everard, Couzens pleaded guilty to three further indecent exposures including two offences committed at a branch of McDonald’s in Swanley, Kent, just days earlier.
Dame Elish said the investigations into these offences had been of “poor quality and inadequate” with the officers displaying an “apathy and disinterest”.
She said in future all cases of indecent exposure that are reported “must be thoroughly and comprehensively investigated”.
She went on: “Furthermore victims need to be encouraged to report and believe they have no reason for shame or embarrassment. These emotions should be left to the perpetrators to experience.”
The report also identified a string of other potential red flags which should have been spotted by police in the years before the murder of Miss Everard.