Tulisa Contostavlos has urged police to investigate undercover reporter Mazher Mahmood - known as the 'Fake Sheikh - and "put an end to his deceits".
She was speaking after her trial on drugs charges collapsed with the judge telling jurors there were "strong grounds to believe" that Mr Mahmood had "lied" at a pre-trial hearing.
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Philip Hammond has dismissed concerns that abolishing stamp duty for first-time buyers will push up house prices.
Elsewhere it will be largely sunny, though with gusty winds at times, and a few showers likely in places.
Heavy rain has caused widespread flooding and travel disruption across north west England and North Wales.