Tories battle to stop Boris: Five rivals to fight Johnson in the race to succeed David Cameron at Number 10

Boris Johnson is set to face leadership rivals Stephen Crabb, Theresa May, Nicky Morgan, Andrea Leadsom, Jeremy Hunt, (clockwise above) - and possibly George Osborne, The Mail on Sunday can reveal. Conservative MPs have been bombarded with calls from allies of would-be candidates seeking support since Mr Cameron announced he is to stand down following his shock defeat in the EU referendum - with Johnson (pictured top) strongly tipped to replace him after leading the Leave campaign.