Tory leadership: Boris Johnson launches campaign to be next prime minister – live news
Rolling coverage of the day’s political developments, including Johnson and Javid launching campaigns, PMQs and cross-party bid to rule out no-deal
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Johnson says he has seen the UK’s partners want it to recover its self-belief.
He says he does not underestimate the challenges lying ahead.
In everything he does he will seek to strengthen the union – this “awesome foursome” that makes the UK a “softpower superpower”, Johnson says.