Vicky Pryce, former wife of disgraced British ex-minister Chris Huhne, has been convicted of perverting the course of justice by taking penalty points on her driving licence in 2003 for a speeding offence he had committed.

Huhne, who resigned as energy secretary in February 2012 when he and Pryce were both charged over the 2003 points, had pleaded guilty to the charge on 4 February.

Huhne considered until his guilty plea a likely successor to Deputy Prime Minister Nick Clegg as Liberal Democrat leader, and Pryce, a former joint head of the government's economic service, will be sentenced later. They both face jail terms.

The speeding points deception, which took place at a time when the couple were married, remained a family secret for eight years but came back to haunt Huhne after the acrimonious break-up of the 26-year marriage.

Huhne abruptly left Pryce in June 2010 when his long-term affair with former aide Carina Trimingham was about to be exposed in the press.

Details of the trio's private lives were splashed all over the newspapers for weeks.

Months later, Pryce told two newspapers about the 2003 points deception in an act of revenge against Huhne.

The jury were shown an email from Pryce to a journalist in March 2011 in which she wrote: "I definitely want to nail him."

The first news reports about the points incident appeared in May 2011 and police then started investigating the matter, culminating in criminal charges in February 2012.

Pryce pleaded not guilty, arguing that Huhne had coerced her into taking his penalty points so he could avoid a driving ban.

Huhne already had penalty points on his licence at the time while Pryce did not, so she was not at risk of a ban.

Pryce's first trial ended last month after the jury at London's Southwark Crown Court were unable to reach a verdict.