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.
Speaking to reporters to condemn the police and CPS investigation into the "plebgate scandal" that cost Andrew Mitchell his job, he described in detail the devastating personal impact the scandal had on him and those close to him.
My reputation was destroyed, I was vilified relentlessly, with over 800 hate emails received over the course of that first week.
I and my family were driven from our home, with as many as 20 journalists and photographers camped outside. My children were followed by the press, my 92-year-old mother-in-law was pursued in Swansea, I was spat at on the street.
I lost my job, after a career spanning more than 25 years in parliament, serving my constituents, my party and my country.
What does all this say about our police and about basic fairness and decency in our society today?
Andrew Mitchell MP, former Tory party whip, is speaking to reporters after one police officer was charged with misconduct in public office over the "plebgate" affair that forced him to resign from his job.
"I would like to express my deepest gratitude to my friends, my family, my many constituents in Sutton Coldfield, my staff, my legal team, political colleagues on both sides of the House of Commons and Lords, and members of the International Development Community.
"All who gave me their support and stuck by me throughout a very bleak period."
"I would also like to thank the journalists who refused to side with the mob, when I was caught between the press and police for 89 days."
Five police officers will face gross misconduct proceedings linked to the 'Plebgate' row, watchdog the Independent Police Complaints Commission said.
CCTV footage of Andrew Mitchell leaving Downing Street was broadcast by Channel 4 News.
The CPS, who charged one officer with misconduct in a public office today, said they looked at "previously unseen and unedited CCTV" footage and concluded there was not enough evidence to "show that the officer at the (Downing Street) gate lied in his account".
PC Keith Wallis has been charged for allegedly sending an email to his MP but it is claimed he did not witness the exchange between Mr Mitchell and police officers at the gate.
– Police Federation statement
We welcome the decision by the CPS that there was insufficient evidence to show that the officer at the gate lied in his account and that there was insufficient evidence to show that Mr Mitchell was the victim of a conspiracy of misinformation.
We have always been concerned by the selected information that has been put into the public domain and it is noteworthy that the CPS came to its conclusions after reviewing all the evidence, including unedited CCTV footage from Downing Street.
The police officer charged over the 'Plebgate' affair allegedly sent an email to his MP over the incident but it is claimed he did not witness the exchange between Andrew Mitchell and Downing Street officers, the Crown Prosecution Service said.
A CPS statement said: "We have also received evidence in relation to PC Keith Wallis who sent an email to the deputy chief whip, John Randall who was his MP, saying that he had witnessed the incident.
"We have decided, having carefully considered the evidence in accordance with the Code for Crown Prosecutors, that there is sufficient evidence to charge PC Wallis with misconduct in a public office and that it is in the public interest to do so.
"I should make it clear the misconduct allegation relates to evidence that PC Wallis falsely claimed to have witnessed the incident, not to how the incident was described in his account.
"PC Keith Wallis has been charged and is required to attend Westminster Magistrates’ Court on 16 December 2013."
We have considered all of the evidence in this case, including previously unseen, unedited CCTV footage from Downing Street, not referred to by the media.
Taking it all into account, including the accounts of the officer at the gate of Downing Street and that of Andrew Mitchell MP before, during and after the incident, we have found that there is insufficient evidence to show that the officer at the gate lied in his account.
– Alison Saunders, Director of Public Prosecutions
The CPS has also found that there is insufficient evidence to show that Mr Mitchell was the victim of a conspiracy of misinformation.
With insufficient evidence to show that the officer at the gate lied in his account, we must consider other matters, as set out below, on that basis.
I have, however, authorised one officer to be charged with one count of misconduct in public office.
PC Keith Wallis has been charged with misconduct in public office over the Andrew Mitchell "plebgate" affair, the Crown Prosecution Service said.
Operation Alice: CPS authorises one officer to be charged with misconduct in public office http://t.co/WTTakJz3eI
Detective Sergeant Stuart Hinton from Warwickshire has told MPs he was sorry for any distress caused to MP Andrew Mitchell and his family over Plebgate. A second officer Sergeant Chris Jones from the West Midlands force said he was unable to apologise for something he had not done.
Sgt Chris Jones was forced to reveal that 13 complaints had been made against him during his 28-year service, with none resulting in any misconduct proceedings.
The issue arose as the committee was questioning Sgt Jones for the second time after he failed to mention any disciplinary proceedings during his first appearance.
Sgt Jones also told the Home Affairs Select Committee that he did not feel responsible for any distress Andrew Mitchell or his family had been subjected to in the wake of the 'plebgate' scandal.