Economist Vicky Pryce, who spent two months in prison earlier this year, has said that women behind bars have "special needs".
She said it was not a case of making prison "softer" for female offenders, but of minimising the wider impact and costs on society.
Pryce was sentenced to eight months in prison in March for perverting the course of justice by taking speeding points for her former husband Chris Huhne in 2003.
More top news
Turning largely dry throughout on Sunday
Huge busts of the Grand Tour presenting trio's heads have been spotted being wheeled through the US West Coast and later Sydney.
The mother of the accused had a heart attack after hearing graphic details of the bloody Charleston massacre.