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.
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Penny Mordaunt called it an “historic and great” day for Ireland.
A 61-year-old woman was taken to hospital with head injuries after the incident in Islington, north London.
Counting will begin on Saturday morning, with the result expected later in the day.