Boris Johnson has dramatically pulled out the race for 10 Downing Street after admitting he cannot unite the warring Conservative Party.The former prime minister said he had "reached out" to leadership rivals Rishi Sunak and Penny Mordaunt to see if they could work together in the national interest, but it had not proved possible.

Boris Johnson has dramatically pulled out the race for 10 Downing Street after admitting he cannot unite the warring Conservative Party.The former prime minister said he had "reached out" to leadership rivals Rishi Sunak and Penny Mordaunt to see if they could work together in the national interest, but it had not proved possible.