The chancellor has spoken out on BBC Radio 4's 'Today' programme
The chancellor said he would then ‘sunset’ the measure
The estimate is significantly worse than that calculated by think-tanks
The Treasury confirmed its intention to bring forward the amendment
He said the government wanted more time to review the numbers
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Advised clients may struggle with lower market confidence
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Almost 5% decline to $1.035 when Asia trading opened
He will also set out environmental regulation reforms