Cabinet Secretary Sir Jeremy Heywood ordered an inquiry into claims that a leaked memo shows SNP leader Nicola Sturgeon would prefer a Tory General Election victory . Cabinet Secretary Sir Jeremy Heywood last night ordered an inquiry into claims that a leaked memo shows SNP leader Nicola Sturgeon wants David Cameron to win the Election . The investigation came after Ms Sturgeon claimed she was the victim of Whitehall ‘ dirty tricks ’ . The row followed an allegation she told French ambassador Sylvie Bermann she would prefer a Tory General Election victory – partly because Labour leader Ed Miliband is not ‘ PM material ’ . The leaked memo , drafted by a British civil servant , reported Ms Sturgeon had privately told the diplomat ‘ she wouldn ’ t want a formal coalition with Labour ; that the SNP would almost certainly have a large number of seats ... she ’ d rather see David Cameron remain as PM ’ . The Scottish First Minister yesterday branded the report as ‘ 100 per cent untrue ’ and stressed French officials had also denied the account . She added ‘ the real issue is how a second-hand and inaccurate account of this meeting came to be written by a UK Government civil servant , then leaked ’ . However , her opponents claimed the memo showed the SNP secretly thinks a Tory-led Government in London would make it easier to stoke nationalist resentments and increase the likelihood of a future independent Scotland . It came as sources revealed that the SNP leader is planning to ambush Mr Miliband during the next televised debate . Ms Sturgeon has been plotting with Plaid Cymru ’ s Leanne Wood to portray Mr Miliband as part of the ‘ discredited Westminster establishment ’ in a joint ‘ Kill Mil ’ nationalist pincer movement . Senior Labour figures fear Mr Miliband has made a disastrous misjudgment by taking part in the next debate on April 16 . The row follows an allegation Sturgeon ( left ) told French ambassador Sylvie Bermann she wants David Cameron ( right ) to win – partly because Labour leader Ed Miliband is not ‘ PM material ’ Sturgeon denied claims that she secretly hoped Cameron would win the election on her Twitter account ( above ) Neither David Cameron nor Nick Clegg will take part , leaving the Labour leader to fight it out with the nationalists , Ukip ’ s Nigel Farage and Green Party leader Natalie Bennett . A Labour source said : ‘ If the girls gang up on him then Ed will be toast . ‘ He doesn ’ t know how to handle that sort of thing. ’ A Tory Party source said : ‘ Miliband is heading towards a giant elephant trap . ’
Plaid Cymru ’ alleged to have made comments to French ambassador . Sir Jeremy Heywood ordered probe after she dismissed memo as untrue .