Nick Clegg said police were using ' 13th century technology ' to try reporters . He is most senior figure to raise concerns over ' treasure hunt ' of journalists . Of the 20 journalists tried before trial , only two have been convicted . Operation Elveden closed in 2011 and has cost taxpayers over $ 15million .
Nick Clegg said prosecutors were using '13th century laws ' to try reporters . He is most senior figure to raise concerns over 'witch hunt ' of journalists . Of the 20 journalists hauled before court , only two have been convicted . Operation Elveden began in 2011 and has cost taxpayers over £15million .