West Mercia Police have confirmed they are reviewing a report on the 'Plebgate' scandal which is alleged to have been fundamentally altered.
Claims have emerged police officers changed the conclusions of a probe into a meeting between Andrew Mitchell and federation members.
In questioning the 'integrity' of plebgate officers the IPCC has dramatically raised the stakes in standoff between politicians and police.
In a statement released on behalf of Inspector Ken MacKaill of West Mercia Police; Detective Sergeant Stuart Hinton from Warwickshire Police and Sergeant Chris Jones from West Midlands Police the officers said that they, "did not plan to mislead anyone" over a meeting they held with Andrew Mitchell.
The statement said: "We are making this statement in response to public concern generated by the widely reported outcome of West Mercia's investigation into matters arising from the meeting we had with Andrew Mitchell MP in his constituency on 12th October 2012.
"The reputation of, and public confidence in, the police service is of immense concern to each of us.
"We acknowledge the investigation’s criticism relating to our poor judgement in talking to the media following the meeting with Andrew Mitchell, for which we take this opportunity to apologise.
"We would like to emphasise (as we did to the investigation) that in no way did any of us ever plan or intend to mislead anyone about what occurred during this meeting or otherwise."
Three police federation representatives that it is claimed misrepresented their meeting with former chief whip Andrew Mitchell should "absolutely" apologise for their role in the plebgate scandal, the Police Minister said.
Damian Green said that comments given by the representatives from the West Midlands, West Mercia and Warwickshire divisions following a private meeting with Mr Mitchell after he was accused of calling their Downing Street colleagues plebs, were "palpably untrue".
Speaking on the BBC's Andrew Marr show, Mr Green said: "He deserves an apology. Let's start with the people who left his office and said things that if you read the transcript were palpably untrue."
Asked if he was referring to the three police officers who met with Mr Mitchell when the allegations first emerged, he replied: "Absolutely those three should apologise."
An e-mail to police chiefs from Deborah Glass, of the IPCC, said a police investigation into a meeting between police officers and Andrew Mitchell, initially concluded the Police Federation representatives had a case to answer for misconduct but later reversed its decision.
Bob Jones, PCC for West Midlands, one of the forces entangled in the affair, said her e-mail effectively suggests senior officers interfered with the report and has demanded an explanation from IPCC chairwoman Dame Anne Owers.
In a letter to Dame Anne, Mr Jones said he has received assurances from his chief constable that West Midlands Police only received one copy of the report, although it is West Mercia Police, a neighbouring force, that was responsible for the internal inquiry.
– Bob Jones in a letter to Dame Anne Owers.
If I was to make an analogy with the criminal justice process, the press release is akin to a police officer commenting after a trial that the accused was, despite being acquitted, guilty as hell.
The Chief Constable of West Mercia Police, David Shaw, has said that a review into his force's investigation into the 'Plebgate' scandal is underway.
“I completely understand why PCC Ron Ball has requested a review into the West Mercia Police-led investigation.
“This work is currently ongoing to clarify the specific issues raised in the IPCC letter. Once this review has been completed a full and comprehensive account will be shared with Mr Ball.”
The police watchdog launched an "unwarranted attack" on three officers when it claimed they tried to discredit former Conservative chief whip Andrew Mitchell, the West Midlands Police and Crime Commissioner said.
Following a detailed investigation, with legal advice, three experienced senior officers from three separate forces, all under the supervision of the Independent Police Complaints Commission, came to the clear conclusion that there were no grounds for disciplinary action in relation to the case involving Andrew Mitchell and representatives of the Police Federation.
Then, IPCC Deputy Chair Deborah Glass – who supervised the investigation throughout and could have taken over the management of this case at any time, yet did not – for some reason decided to issue a press statement giving a different view.
She did not state what elements of the process she had supervised were incorrect, nor on what different facts or legal advice she decided to state her opinion.
Her opinions, I emphasise, are just that – opinions – and have no legal status.
– West Midlands Police and Crime Commissioner Bob Jones
Her role should have been to comment as to whether there were any flaws in the process and she has not produced evidence of any such flaws.
Her statement vilifying the officers concerned was gratuitous and in my opinion an abuse of process. I stand fully behind the three Chief Constables and by my two Police and Crime Commissioner colleagues in Warwickshire and West Mercia.
I will be writing to the IPCC asking for an apology for what I consider an unwarranted attack on the integrity of the investigating officers and the senior officers who sat in judgement.
Home Affairs Select Committee Chair Keith Vaz has told ITV News he must see both draft and final report by West Mercia into 'plebgate' before next week.
An investigation by West Mercia Police initially concluded that Police Federation representatives had a case to answer for misconduct over claims they made about a meeting with former chief whip Andrew Mitchell, it has emerged.
A letter to police chiefs from IPCC deputy chair Deborah Glass highlights that the inquiry findings changed between the draft report and the final version.
Glass yesterday publicly called for a misconduct panel to decide if three police officers gave a false account of discussions they had with the Tory MP at the height of the so-called "plebgate" furore.
In an email, sent today, Ms Glass wrote: "I note that in the first draft submitted to the IPCC in July, the senior investigating officer did in fact conclude there was a case to answer for misconduct, although their final report, submitted in August did not."
David Cameron says the MP for Sutton Coldfield, Andrew Mitchell, is owed an apology by three Police Federation representatives who met with the MP in the wake of the Plebgate scandal.
The police watchdog - IPCC - criticised the investigation into the meeting after a recording emerged conflicting with reports that Mr Mitchell had not offered an account of what happened outside 10 Downing Street.
The chief constables of Warwickshire, West Mercia, and West Midlands Police say they will go before MPs to explain.