168 | Who is Boris Johnson?

We try to work out what the current favourite to be next Tory  leader actually stands for.  Can his time as Mayor of London tell us what kind of PM he might be?  Will his journalistic past come back to haunt him?  Does he have a political philosophy beyond 'doing Brexit'?  Plus we discuss whether the Johnson-Trump comparisons really stand up. With Helen Thompson and Chris Brooke.