A Metropolitan Police officer has pleaded guilty to a charge of misconduct in public office over the "plebgate" scandal.
Police officers at the centre of the so-called 'plebgate' scandal have been recalled to face MPs over allegations they misled parliament.
The Chief Constable of West Mercia Police has offered an "unreserved apology" to ex-Chief Whip Andrew Mitchell over the 'Plebgate' meeting.
Andrew Mitchell declined to comment to awaiting reporters on the news a police officer has pleaded guilty to misconduct over the "plebgate" scandal during his visit to his Sutton Coldfield constituency.
Mr Mitchell told them: "I hope you're enjoying visiting my constituency."
Senior MPs on both sides of the green benches for Andrew Mitchell to be reappointed to the Cabinet after a police officer admitting to falsely claiming to have witnessed the 'plebgate' row between the former Chief Whip and officers:
Delighted Andrew Mitchell vindicated after long and tough time fighting against system. Must never again - to cab minister or anyone
Vindication for Andrew Mitchell: http://t.co/NmESBOn5Lm I sincerely hope he is re-appointed to the Cabinet.
David Cameron said it was "completely unacceptable" for a police officer to falsify their account of an incident after PC Keith Wallis pleaded guilty to misconduct in public office over the "plebgate" affair.
The Prime Minister said: “It is completely unacceptable for a serving police officer to falsify an account of any incident.
"Andrew Mitchell has consistently denied the version of events presented in the email and I welcome the fact that the officer concerned has now pleaded guilty.”
Shadow home secretary Yvette Cooper said the actions of PC Keith Wallis, who has pleaded guilty to misconduct in public office in relation to the "plebgate" affair, risks "casting a shadow over the excellent work police officers do day in, day out".
For a police officer to make up evidence in any case is an extremely serious offence which jeopardises justice and undermines confidence in the important work police do. Police officers uphold the law, and their evidence must be trusted in court.
Democracy depends on the idea that everyone can rely on the police to treat them with honesty and fairness, without fear or favour - from Cabinet ministers to teenagers in the street or victims of crime.
– Shadow home secretary Yvette Cooper
So it is of great concern when those we trust fall below the standards the police and the public expect.
Andrew Mitchell has had to wait far too long for the results of all these investigations. The remaining misconduct inquiries must be pursued swiftly.
Labour MP Keith Vaz has said that a police officer's admission of misconduct over 'plebgate' is an acknowledgement of gross unfairness towards former chief whip Andrew Mitchell.
The Home Affairs Select Committee chairman said:
This plea is not only the first public acknowledgement that Mr Mitchell has been the subject of gross unfairness but it also an admission that a criminal offence has been committed against him.
With 11 other officers being subject to misconduct hearings, and the further investigation by the IPCC, this appears to be a complete vindication of Mr Mitchell's position.
– Home Affairs Select Committee chairman Keith Vaz
Lessons have to be learnt in order to restore full public confidence in way these matters are dealt with.
Now is the time to turn the page on this whole unfortunate incident which took only 45 seconds, but has cost the taxpayer hundreds of thousands of pounds, Mr Mitchell his job and damaged the reputation of the police.
Scotland Yard has said that PC Keith Wallis, who has admitted falsely claiming to have witnessed the Plebgate row, will face a misconduct hearing at the conclusion of all legal proceedings.
It will relate to "discreditable conduct, honesty and integrity, and/or improper disclosure of information".
Four other officers have a case to answer for gross misconduct and will be subject to a misconduct hearing in relation to improper disclosure of information, the force said, with the earliest time the hearings can be held said to be in March.
Metropolitan Police Commissioner Sir Bernard Hogan-Howe has apologised to former Tory chief whip Andrew Mitchell after an officer admitted lying about the 'plebgate' affair.
He said: "This investigation has been a ruthless search for the truth as at the heart of this are extremely damaging allegations that officers have lied and falsified statements against a Cabinet Minister.
"The evidence against Pc Wallis was such that he has entered a guilty plea. To lie about witnessing something and provide a false account falls way below the standards that I and Pc Wallis's colleague expect of police officers.
"His actions have also negatively impacted upon public trust and confidence in the integrity of police officers.
"I would also like to apologise to Mr Mitchell that an MPS officer clearly lied about seeing him behaving in a certain manner. I will be writing to him offering to meet and apologise in person.
The Old Bailey today heard that Pc Keith Wallis had offered his resignation and admitted misconduct in public office over the 'plebgate' affair in an police interview before pleading guilty at the first opportunity in court.
Former Conservative chief whip Andrew Mitchell has welcomed the guilty plea of an officer charged with misconduct in public office over the 'plebgate' row.
In a statement, he said: "I am pleased that justice has been done in a criminal court today.
"It is very sad and worrying for all of us that a serving police officer should have behaved in this way. There remain many questions unanswered, in particular why Pc Wallis wrote this email and who else was involved in this process."
"I am looking forward to seeing justice done in the up to 10 other related disciplinary cases involving police officers so that I can focus all my energy on delivering for my constituents and help David Cameron win a Conservative majority at the 2015 Election."
A police officer who admitted misconduct in public office by falsely claiming to have witnessed the 'plebgate' row involving Tory MP Andrew Mitchell will be sentenced on February 6.
Pc Keith Wallis, 53, was charged after he sent an email to deputy chief whip John Randall, claiming that he had seen the incident involving other police officers in September 2012.
Mr Justice Sweeney released Wallis on unconditional bail but warned him that "all sentencing options remain open to the court".