Specifically, in regards to conditions of the ESM which call for a single regulator by January 1, 2013.

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In a speech to Parliament, Mr. Cameron welcomed the call for a new regulator "with the power to demand upfront apologies and impose million-pound fines, " but expressed concern about underpinning the organization in law.

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However, it will be "engaging with the licensee, Today FM Sydney, around the facts and issues surrounding the prank call, " said the regulator's chairman, Chris Chapman.

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In court papers, Mr. Tourre's lawyers have argued the regulator is cherry-picking one phone call within a large trove of recordings the SEC had known about since 2008.

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Brown said on a conference call Wednesday that he had notified the insurance regulator of his decision after he heard about Moody's action.

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Phone regulator Oftel has weighed in and told BT to offer its rivals deals for Flat Rate Internet Access Call Origination (Friaco).

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"It seems the regulator has taken action in the cases where it is easiest to prove suspicious trading, specifically with single leg long call buying" said Gareth Ryan, a managing director at IUR Capital, one of the options firms assisting regulators in the Heinz case.

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