the london mayor , who today launched the tory campaign in the capital , said the labour leader was ` hostile ' to people who wanted to own their own home and would embark on an ` orgy of regulation and state socialism .
mr johnson was mobbed by fans at the launch in mill hill , north london where he posed for selfies with supporters .
he was joined at the event by hendon candidate matthew offord and his dog max , and international development secretary justine greening .