Defence counsel David Moggach asked Mr Calder if Mr Webber had told him to curb his speed on the road.

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"When you talk to him and you're talking about music, you feel like you're talking to a musician, not a guy in a suit, " says David McPherson, an executive vice president at Sony who worked for Calder for four years.

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South West Norfolk Conservative Association's chairman David Hills is understood to support Ms Truss, who stood for the Conservatives in Calder Valley in West Yorkshire at the 2005 election.

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