<p>Channel 4 News has obtained covert recordings, dating back to 2013, where forensic accountants from Second Sight describe how the Post Office and Fujitsu knew their IT system could change subpostmasters' accounts.</p><br /><p>Lord James Arbuthnot, the Conservative MP who campaigned for justice for subpostmasters, was shown in the C4 footage and appeared emotional when he gave his response. (Credit: Channel 4 News)</p>
