Conservative Party Chairman Grant Shapps has said he was "surprised" at the Liberal Democrats dramatic shift on the so-called Bedroom Tax.
Shapps described the policy as "very reasonable" and questioned why the Lib Dems had not raised concerns earlier.
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In the run-up to the 8 June General Election, the Labour leader said he wanted to find a way of "reducing that debt burden".
Best of the clear, dry weather across the west overnight.
Chris Froome savoured his fourth Tour de France title as Dutchman Dylan Groenewegen won stage 21 of the race in Paris.