Caroline Flack has been arrested and charged with assault by beating.
There were reports of a man being assaulted at the Islington home that the 40-year-old star shares with her boyfriend Lewis Burton.
Pro tennis player Lewis was reportedly taken to hospital after the rumoured bust up.
A Met Police spokesperson told the Daily Star Online : "Caroline Flack, 40, of Islington was charged on Friday, 13 December with assault by beating. She will appear on bail at Highbury Corner Magistrates’ Court on Monday, 23 December.
"This follows an incident at approximately 05:25hrs on Thursday, 12 December after reports of a man being assaulted. He was not seriously injured."
A London Ambulance Service spokesperson said: "We were called yesterday (Thursday 12 December) at 5.28am to reports of a person unwell in Islington.
"We sent an ambulance to the scene and took a person to hospital."
