David Cameron has revealed he is related to the reality TV star Kim Kardashian . The Prime Minister said he was the thirteenth cousin of the US celebrity , who is married to rapper Kanye West . The startling revelation comes despite Mr Cameron insisting that he could not understand 'why everyone is interested in the Kardashians ' after being asked about his TV habits . Scroll down for video . Prime Minister David Cameron has revealed he is the thirteenth cousin of the US celebrity Kim Kardashian . In an interview with the celebrity magazine Heat , Mr Cameron was asked if he watched Keeping Up With The Kardashians . Mr Cameron said : 'No , but I 'm related to them . ' But he added : 'Did you know I 'm 13th cousins with them ? ' The Prime Minister and his celebrity cousin , who shot to fame after starring in a leaked sex tape , are linked by their mutual ancestor , Sir William Spencer , born in 1555 , according to genealogy website geni.com . Asked if he fancied a family reunion , he replied : 'That would be great , thanks . ' But the Kardashians are not the only famous relatives of the Prime Minister . Mr Cameron , who is descended from a long line of wealthy stockbrokers and bankers , is also related to the Queen . The Tory leader is descended from King William IV – who fathered a number of illegitimate children with mistress Dorethea Jordan . The PM and his celebrity cousin are linked by their mutual ancestor , Sir William Spencer , born in 1555 , whose daughters Elizabeth Russell and Catherine Spencer are direct ancestors of Mr Cameron and Kim Kardashian . One of them was the PM 's great-great-great-great-grandmother , meaning Mr Cameron is a fifth cousin of the Queen . During the interview with Heat magazine , Mr Cameron made a number of also admitted he could not multi-task , was scared of rats and once aspired to be a lorry driver . Asked what he wanted to be when he was growing up , he said : 'All sorts of things : a soldier , a lorry driver , a farmer . ' I was n't sure til I left university , then decided I wanted to be a politician . '
Prime Minister says he was the thirteenth cousin of the US celebrity . they are mentioned by their mutual ancestor , Sir ##ard Spencer , sometime in childhood . Mr Cameron said he still does not remember his Up With The Kardashians .