The prosecution said that Mr McPartlin had apologised to police for his actions and admitted that he has a problem with alcohol and "emotional issues".
I let myself down, I let a lot of people down.
McPartlin's barrister Liam Walker said his client had been seeking help for "alcohol and emotional issues" at the time of the crash, adding that his mother was in the vehicle with him.
Inside the court, as she handed down her sentence, District Judge told McPartlin: "You were a man of good character...you have lost that good character".
Fining him, the Judge said: "Because of the seriousness of this offence, the financial pain must be imposed on you as on any other offender".
As well as the huge fine, Ant will pay pay £255 in costs.
As Ant faced his verdict at Wimbledon Magistrates Court on Monday, it emerged that he was twice the legal limit when he crashed with his mum Christine Woodhall in the vehicle.
Bulgaria annual CPI records 2.2% inflation in March
The wholesale prices of food articles fell 0.29 per cent in March compared to a 0.88 per cent rise in the previous month. According to the Commerce Ministry data, the WPI inflation in March 2017 was more than double at 5.11 per cent.
"I just want to say that I'm truly sorry", he said outside court.
Of the accident, the Metropolitan Police said one of the passengers of the cars was a child, The Guardian reported.
At this point, Freeman was interrupted by the crash but - clearly a professional - she carried on, adding: "Excuse me, sorry, it's just some cars have had a bit of a crash behind us there".
"I accept full culpability for this and wish to apologise to all those concerned".
The ITV presenter said outside court: "Can I say a few words?"
The TV presenter, who lives in Chiswick, west London, was arrested at around 4pm on March 18 after failing a roadside breathalyser test following a collision between the Mini he was driving and two other cars.
McPartlin and Donnelly are among the best-known presenters on British TV, fronting primetime entertainment formats for ITV such as "Saturday Night Takeaway", "Britain's Got Talent" and "I'm a Celebrity, Get Me Out of Here!"