Comic Rory McGrath has been arrested on suspicion of a drunken assault against a couple.
Police were called to reports that a man had assaulted a man and a woman at a property in Pool, West Cornwall, at 10.15pm on Friday.
McGrath, a regular panellist on BBC comedy sports show They Think It's All Over, was held at Camborne police station and questioned about the incident.
The comedian, who grew up in Redruth, Cornwall, and now lives in Cambridge, has been bailed until July 5 pending further inquiries.
A spokesman for Devon and Cornwall Police said: "At around 10.15pm on Friday 10 May 2013 police were called to a property in the Pool area, near Redruth, following a report that a man had assaulted a male and female couple, who it is understood, were attempting to assist this man who was heavily in drink.
"A man in his late 40s received a bloody nose and scratches to the face.
"A 57-year-old man from the Cambridge area was arrested for common assault and an assault causing actual bodily harm.
"He has been bailed until 5 July while police carry out further inquiries."
McGrath has also appeared alongside Dara O'Briain and Griff Rhys Jones in Three Men In A Boat.