Michael Howard calls on Boris Johnson to resign after byelection defeats

PM has said he intends to carry on but former Tory leader says party would be better off under new leadership'

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The former Tory leader Michael Howard has called on Boris Johnson to quit and on cabinet members to consider their positions after a double byelection defeat and the resignation of a Conservative party co-chair.

Johnson, who is in Rwanda at a Commonwealth summit, said on Friday that he would keep going as prime minister despite losing the former Tory stronghold of Tiverton and Honiton to the Liberal Democrats and Wakefield to Labour.