After almost a month in court and a collapsed trial, the 60-year-old former Government economist was warned that she faces jail for her deceit.
Pryce was said to have been 'open-mouthed' and looked 'deeply shocked' when the verdict was returned unanimously at 2.40pm.
Meanwhile, the Crown Prosecution Service has this afternoon released a cache of emails sent by Vicky Pryce to a journalist that raise serious questions about how much senior Liberal Democrats knew about the scandal before it hit the headlines.
As they planned how best to 'nail' Chris Huhne, Pryce told Isabel Oakeshott that she had revealed the points-swapping scam to Vince Cable and his wife Rachel, as well as Nick Clegg's wife Miriam, before the story was published and her arrest.
Pryce and disgraced former Energy Secretary Huhne will stand next to each other in the dock next week when they are sentenced.
Outside court an emotional Pryce stood alongside her solicitor, who spoke on her behalf and said she was 'very disappointed to have been convicted' and thanked her friends, family and colleagues for their support.
There is now renewed pressure on Nick Clegg to reveal how much he and others knew about the crime.
The jury were shown emails which said that over dinner in January 2011 she had told Vince Cable and his wife Rachel she had taken her husband's points.
'I had told Vince and Rachel about points before when the three of us were having supper about a month ago –they were horrified at the time but VC has probably forgotten it by now. He was v tired that night,' Mrs Pryce told a Sunday Times journalist.
This was four months before the case was made public and a year before she and Huhne were charged by police.
But the Business Secretary said today he had 'no recollection' of the conversation.
'Yes, I have told VC (Vince Cable), Miriam C (Clegg), MOak (Matthew Oakeshott) … and a few other Lib Dem Lords and others working close to NC (Nick Clegg),' Mrs Pryce wrote later in April 2011
'I have never, ever been told by Vicky or anybody else about the traffic points story. I got to know about this when everybody else did.' Mrs Clegg said.
Lord Oakeshott also issued a denial today saying: 'Vicky (Pryce) must have been under great pressure but I am sure she never raised a question of points with me'.
He told the economist, as he had told Huhne, to be under no illusion of what sentence to expect.
'Obviously Ms Pryce was present when I indicated to Mr Huhne the inevitable consequences of a conviction for an offence of this sort.
'She must be under no illusions that my granting of bail indicates any watering down of that provisional approach.'
He thanked the jury for discharging their task 'assiduously' in a case which could not have been easy.
'Perverting the course of justice is a serious offence.
'We hope this conviction serves as a timely reminder to motorists who try and avoid driving bans by "giving" their points to others.
'This practice is not only unlawful, but has life changing consequences for those who get caught flouting the rules.'
On the first day of their trial on February 4 Huhne caused gasps of disbelief after he finally admitted the crime after years of telling ‘anyone who would listen’ - including the Prime Minister and the Deputy Prime Minister - that he was innocent.
Pryce said she had taken the points for her former husband but she denied the charge, claiming he forced her to do it.
The case dates back to 2003 when Huhne was caught speeding in his BMW near Stansted Airport.
He thought he would lose his licence, jeopardising his chances of being nominated as the Lib Dem candidate for Eastleigh, Hampshire.
JURORS WERE 'NODDING OFF' DURING PRYCE'S RETRIAL
The economist was forced to stop her evidence when one of her legal team spotted that three jurors were struggling to stay awake.
The judge sent the panel of seven men and five women out of the courtroom amid fears they could have missed important information.
The intervention came after the jury in the first trial were dismissed when they could not reach a verdict.
Trial judge Mr Justice Sweeney said questions submitted to the court showed 'absolutely fundamental deficits in understanding'.
His comments sparked a furore over the competence of juries to try high-profile and complex cases and the role of juries in the British judicial system.
The latest incident took place as Pryce stood in the witness box explaining how she plotted to bring down her ex-husband by leaking their penalty points swap to the Press.
Her barrister Julian Knowles QC told the judge: 'My instructing solicitor has noticed at least three members of the jury nodding off.'
Her solicitor Robert Brown added: 'They weren't asleep but I saw episodes of nodding.'
The judge - no doubt mindful that he had already lost one jury in the case - insisted that the overheated courtroom at Southwark Crown Court was to blame.
He said: 'The heat is clearly a factor. I have no reason to believe anything untoward has happened to date.
'This particular courtroom appears to be at either one end of the scale or the other.'
The courtroom was cleared for 30 minutes and left empty to cool down, with its doors open, on the first day of Pryce's evidence.
She said he put his political career first throughout their 26-year marriage, while she was forced to compromise her own successful career.
But the jury unanimously failed to accept her version of events as the prosecution convinced them she was not the 'quivering jelly' she claimed.
Both of Pryce's trials gave a deep and clear insight into the couple's broken marriage.
Huhne left Pryce in June 2010 after confessing to an 18-month affair with his aide Carina Trimingham. Pryce told the court he also had a second secret mistress.
The court heard Pryce spent months trying to reveal the points-swapping episode to the Press so she could ‘nail’ Huhne, and the story broke in May 2011 in two Sunday newspapers.
The warring couple were both charged with perverting the course of justice in February last year.
Huhne stepped down from his post in the coalition Cabinet, vowing to fight the charge and clear his name.
But when his lawyers failed to get the case thrown out, he changed his plea on the first day of the trial and resigned as an MP.
The Liberal Democrat is almost certain to go to jail after being told to be under ‘no illusions’ that he will join the ranks of disgraced politicians alongside Jeffrey Archer and Jonathan Aitken.
In her first trial she also told the court how Chris Huhne forced her to have an abortion for the sake of his career.
Later she then revealed the disgraced former Lib Dem MP tried to make her terminate another pregnancy two years later.
Mrs Pryce, 60, said she was booked in to have an abortion but now had the strength to resist her husband and refused to go at the very last moment
Giving evidence at her trial for perverting the course of justice, she told Southwark Crown Court that she later gave birth to a ‘wonderful’ son, Peter.
It then emerged Peter, who was born in 1992, was involved in an angry exchange of text messages with his father after the break-up. In the emails shown to the court, Peter describes his father as a ‘fat piece of ****’ and tells him: ‘I hate you, so **** off’.
George Courmouzis said Vicky Pryce faced a ‘fait accompli’ when her husband Chris Huhne forced her to take his speeding points.
His sister told him she did ‘something against her will’ shortly after she helped the Lib Dem Cabinet Minister dodge a driving ban.
But prosecutors asked why he did not give evidence at her first trial but had now appeared ‘like a rabbit out of a hat’.
Andrew Edis QC, added: ‘Have you just come forward out of family loyalty to support her?’
Later, as he summed up the prosecution case, Mr Edis told the jury to question why the defendant’s brother ‘appears for the first time like a rabbit out of the hat’. He said 21st century sexual equality meant Pryce was accountable for what she did.
In the second trial it also emerged that Britain's top black judge had been arrested over claims that she lied about her involvement in leaking information on Chris Huhne to the Press"