London Mayor appeared with Mr Miliband on BBC1 's Andrew Marr Show . Mr Johnson said Ed would damage UK more than he 'd damaged his sibling . Comment: the back ' Labour leader laughed off row , saying : 'Boris , you 're better than that '
London Mayor appeared with Mr Miliband on BBC1 's Andrew Marr Show . Mr Johnson said Ed would damage UK more than he 'd damaged his sibling . But he conceded : ' I 'm not saying your brother had dagger in the back ' Labour leader laughed off row , saying : 'Boris , you 're better than that '