The TV stars has been fined £86,000 and handed a 20 month road ban after sensationally admitting to a drink-drive crash this afternoon.
The troubled TV star apologised profusely as he pleaded guilty to drink-driving after causing the crash which left a four-year-old girl injured.
Wearing a black suit and tie, the presenter was today escorted from his car into Wimbledon Magistrates Court, surrounded by several uniformed officers.
Once in court, the 42-year-old presenter appeared morose as he said "guilty" to a single charge of driving while over the limit - admitting he had "alcohol and emotional issues".
The Saturday Night Takeaway star, of Chiswick, was more than twice the legal alcohol limit - with 75mg in his bloodsteam - when his black John Cooper special edition Mini ploughed into two cars in Richmond, south west London on March 18.
The court was told how other people involved in the crash had been left fearing "they could have died" - with a nine-year-old screaming to his mother: "I'm dying mummy, I'm dying mummy".
McPartlin today tried to draw a line under the horror incident as he told magistrates he was guilty and ready to take his punishment.
The court was told that McPartlin had apologised to police over what had happened, saying that he was "ashamed and mortified" over the crash.
He admitted that he had "emotional issues", with his defence team saying he hoped "he can be forgiven by the many people he has let down".
McPartlin will now battle to repair the damage done to his career.
After he was charged, ITV announced the Saturday Night Takeaway host would step back from his TV commitments, with co-presenter Declan Donnelly hosting the final two episodes of the show on his own.
McPartlin appeared alongside Donnelly on TV screens over the weekend as Britain's Got Talent aired its pre-recorded audition shows.
A pal previously told The Sun that Ant knows he has to "face the music".
They said: "He is obviously gutted about the whole thing and wants to focus on getting better.
"He has a lot to do to prove himself again. Hopefully this is the first step.”
It is believed the crash happened after Ant attempted to overtake another car on a bend and lost control.
Four-year-old Amaira Dandekar was in one of the cars with mum Shilpa, dad Faheem Vanoo and had to be taken to hospital as a precaution after the crash.
In the aftermath, restaurant boss Faheem told The Sun: "I don’t care whether he’s a millionaire and I don’t care whether he’s a famous TV star — he could have put my daughter in a wheelchair.”
Ant's driver's side front wheel was torn off and the two dogs - including Ant's chocolate labrador Hurley - in the back were left whimpering and shivering in shock.
Ant’s mum Christine was in the passenger seat at the time.