European election results in France are a "disaster" for the country's President Francois Hollande, ITV News' Europe Editor James Mates told Good Morning Britain.
He said the rise of the National Front in France has been building more steadily over time, in contrast to the sharp jump in support for Ukip among British voters.
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The Labour leader will also announce an inquiry into anti-semitism and other forms of racism to be chaired by Shami Chakrabarti.