Thomas Ravenel offered to pay an Uber driver $500 to wipe cocaine off his face and clothes after he partied on the night his youngest child, Saint, was born, his former nanny claims.

Charleston's disgraced former State Treasurer and ex-reality TV star was allegedly so inebriated he had to be persuaded to clean up and go to the hospital to visit his son when the child was born one month prematurely in November 2015.

This is just one revelation of a string of fresh allegations leveled against the 56-year-old former Southern Charm star in a deposition given by Dawn Ledwell, his children's one-time nanny.

The deposition was given as part of his ongoing custody battle with ex Kathryn Dennis, 26, and is among new filings obtained by DailyMail.com just hours before the judge sealed the case.

Today, on the eve of the show’s season six premiere, we can reveal what they tried to keep secret as Ravenel and the mother of his children duke it out through the courts.

Thomas Ravenel's former nanny Dawn Ledwell accused him of abusing illegal drugs and of nearly amputating his ex Kathryn Dennis' hand in a car door. Pictured: Ravenel arriving at work amid fresh allegations of substance abuse and domestic violence

The deposition was given as part of Ravenel's ongoing custody battle with ex Dennis, 26, the mother of his children Kensie, 5, and Saint, 3, (pictured) and is among new filings obtained by DailyMail.com just hours before the judge sealed the case

Although Ledwell (pictured) described Ravenel as a loving father, according to her, he admitted to abusing drugs in conjunction with alcohol. Ledwell claimed Ravenel, who ran for Senate in 2014, told her he had 'sniffed cocaine off his campaign sign'

The claims the couple did not want aired include allegations of substance abuse and domestic violence.

Although the former nanny described him as a loving father, according to Ledwell, 44, Ravenel admitted to abusing illegal and prescription drugs in conjunction with alcohol.

Ledwell claimed that Ravenel, who ran for Senate in 2014, told her he had 'sniffed cocaine off his campaign sign.'

She recounted the tale told to her by an Uber driver and friend who claimed to have driven Ravenel to the hospital the night his son was born.

Ledwell said: 'One night [my friend] got a call to go pick up these gentlemen. I believe there were between three or four of them.

'She said that two of those people were Thomas Ravenel and [fellow former cast member] JD Maddison…they wanted to party. They were all intoxicated..they were doing cocaine in her car.

'Thomas was the last person to be dropped off and he wanted to give her a tour of his house…She's trying to convince him to go to the hospital. Like ''Dude, if you're celebrating the birth of your baby, you need to go to the hospital and spend time with the baby. Wasn't the baby born early?''

'And so he's like ''Yeah, yeah, yeah. Well, will you do me a favor? I'll pay you $500 to clean the cocaine off my face and wipe it off my clothes.''

Ledwell claimed in her deposition (pictured) that Ravenel wanted Kathryn to abort Saint, once threw cigarette butts in Kathryn's face for sleeping late and 'nearly amputated Kathryn's hand in a car door,' during one erratic drunken episode

Ledwell claimed that Ravenel drank bourbon daily, once drunkenly 'vomiting down the bed' in his sleep, and said he told her he took Klonopin, Viagra, pain medication and 'something for bi-polar'

Ledwell claimed Ravenel, who ran for Senate in 2014, told her he had 'sniffed cocaine off his campaign sign' and said she had seen him 'fly into a rage all of a sudden'

She recounted the tale told to her by an Uber driver and friend who claimed to have driven Ravenel to the hospital the night his son was born. She claimed that Ravenel paid her $200 and never came up with the other $300

The driver claimed that Ravenel paid her $200 and never came up with the other $300, Ledwell said.

Ledwell said Ravenel drank bourbon daily, once drunkenly 'vomiting down the bed' in his sleep, and told her he took Klonopin, Viagra, pain medication and 'something for bi-polar.'

Ravenel allegedly wanted Kathryn to abort Saint, once threw cigarette butts in her face for sleeping late and 'nearly amputated Kathryn's hand in a car door,' during one erratic drunken episode, Ledwell claimed in her deposition.

It is all a world away from the icy civility displayed by both Kathryn and Ravenel at their last appearance in Charleston County Court in February when a judge denied Ravenel's bid to have evidence from before the date of Ledwell's alleged sexual assault excluded from custody proceedings.

Kathryn filed for sole custody of the couple's children Kensie, 5, and Saint, 3, last November just three weeks after Ravenel was arrested and charged with that assault.

Ledwell has since taken and passed a lie detector test.

Ravenel was dropped by show makers and is currently awaiting criminal trial.

He is no longer a cast member but, DailyMail.com has learned, he features large in the season six premiere, which airs on Wednesday.

The couple's former nanny claims on the night their son Saint was born in November 2015, Ravenel was allegedly out partying and did cocaine. Pictured: Dennis with Saint after his birth

Ravenel was dropped by show makers and is currently awaiting criminal trial. He is no longer a cast member but, DailyMail.com has learned, he features large in the season six premiere, which airs on Wednesday. Pictured: Dennis and Ravenel on the hit Bravo show

According to show insiders it opens with cast members reeling from the news of his arrest amid allegations of rape.

According to one: 'At first it was as if Thomas was in some sort of denial. It was frankly bizarre. Meanwhile Kathryn has had to face the overwhelming prospect of being a single mother if he goes to prison. But she's strong and she has a great deal of support from cast members.'

None have commented publicly so far and, according to one show insider, 'everyone is afraid Thomas is going to subpoena or sue them.'

Ravenel has already subpoenaed Patricia Altschul, show grand dame and mother of its executive producer Whitney Sudler, as part of his custody bid.

He has accused her of colluding with Kathyrn to encourage Ledwell to make her allegations of sexual assault.

According to one close to the group: 'Thomas thinks that there is some great conspiracy of women out to get him when of course that's complete nonsense.

'He's blaming everybody but himself for what's happened to him. He's blaming the show, Patricia, Kathryn, nanny Dawn.

'The only person engaging in character assassinations is Thomas and the only responsible for Thomas's downfall is Thomas.'