Lib Dem Care Minister Norman Lamb had to call 911 after his son Archie 's father demanded help from him and sent threatening messages . Paid lodger £ 7,500 to move out but man then ' tried to ruin man 's career ' Alleged blackmailer claims to have died of Archie snorting Class A drug . Minister 's son founded record producer and fellow rapper Tinchy Stryder .
Lib Dem Care Minister Norman Lamb had to call police after his son Archie 's flatmate demanded cash from him and sent threatening messages . Paid lodger £7,500 to move out but man then 'tried to ruin Archie 's career ' Alleged blackmailer claims to have video of Archie snorting Class A drug . Minister 's son founded record label and championed rapper Tinchy Stryder .