An independent review of a year-long murder investigation hopes to gives Australian Police new leads in the case of former Bermuda prosecutor's wife Corryn Rayney.

The review, however, will not include a re-interview of Lloyd Rayney, her husband, who is a former Bermuda Senior Crown Counsel.

According to the West Australian newspaper, Police Commissioner Karl O'Callaghan said the review, which could be conducted by senior police officer from another state, would consider new avenues of investigation, resource levels and overall handling of the case.

He denied that the review, which coincides with the first anniversary of the murder, was necessary because the case had slowed to a standstill, saying it was routine in unsolved murder cases.

In November last year, Commissioner O'Callaghan flagged plans for an independent review, saying it would be conducted once police received analysis of all forensic evidence, which is believed to exceed 2000 items.

The West Australian newspaper reports detectives from the major crime squad, which is handling the case, have conducted three internal review so far.

At this time, Police are still awaiting analysis on evidence sent to New Zealand for forensic testing.

The commissioner believes that using the independent review could help stimulate the investigation.

He said: "It's a good investigative practice to have a fresh set of eyes look at the investigation.

"They may find something that's been overlooked or they have a new idea.

"We're hoping it will bring new leads. It may also bring new idea or a fresh approach to the investigation."

Mrs. Rayney, a Supreme Court registrar, disappeared on August 7 last year after leaving a boot scooting (line dancing) class.

Her body was found nine days later in a bush grave in King's Park, Perth.

Police believe Mrs. Rayney was murdered in the family's home and named her estranged husband as the prime suspect. However, Mr. Rayney has not been charged.

The commissioner told The West Australian that it was customary for an independent review to be done by a senior officer from interstate.

"They are like auditors, they come in and remain independent of the actual process of conducting the case," he said.

"They look at everything – they look at the way it has been handled, at the person of interest, they analyse all the evidence but they don't conduct any fresh investigations themselves."