The Prime Minister said it was "completely untrue" that Brexit was the motivation for the move, insisting it was time for a new session of Parliament to set out his "exciting agenda".
But a furious Commons Speaker John Bercow joined a chorus of outrage over the plan, saying he had not been consulted about the move, which he labelled a "constitutional outrage".
Under the PM's plan Parliament will be temporarily shut down from around September 11 until the state opening on October 14.
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