Prime Minister David Cameron has described Tory MP Douglas Carswell's defection to UKIP as "deeply regrettable" and "self-defeating".
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Becoming fresher, unsettled with rain at times as the week goes on.
Parts of the major A1 road have been shut after a sinkhole appeared overnight on Saturday.
After the sacking of Hilary Benn and the rolling resignations, Jeremy Corbyn met his closest aides in an office on the Parliamentary estate.