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Fresh Tory links to shadowy data firm Cambridge Analytica emerged today, after party sources admitted the company "made an approach" to work with them.

The firm is accused of harvesting the personal data of millions of Facebook users to create targeted adverts for political clients, including Donald Trump.

Last night, the Mirror revealed the company had made overtures to the party while David Cameron was Prime Minister.

A Downing Street source today confirmed this was the case.

They were unable to provide exact dates for the approach, what meetings took place and who attended the meetings.

But they said the approach was under Cameron and they believed the rejection had come after Theresa May became Prime Minsiter.

(Image: REX/Shutterstock) (Image: PA)

Mrs May today denied the government had any current contracts with CA or its parent company, Strategic Communications Laboratory (SCL).

But the Ministry of Defence previously held contracts with SCL, paying them £40,000 for "external training" in 2010/11 and £150,000 for "target audience analysis" in 2014/15, according to government documents.

An MoD spokesman said: “We have no current relationship or existing contracts with SCL Group, which includes Cambridge Analytica. As such, the company has no access to any classified information.”

And at Prime Minister's Questions today, SNP leader Ian Blackford reeled off a string of additional links between the Tory party and the firms.

(Image: PA)

He said: "Can I point out that the parent company of Cambridge Analytica, Strategic Communications Laboratory, it has been run by a chairman of Oxford Conservative Association, its founding chairman was a former Conservative MP, a director appears to have donated over £700,000 to the Tory party, a former Conservative party chairman is a shareholder.

"We know about the links to the Conservative party, they go on and on."

Mrs May replied: "has been talking about two companies. As far as I’m aware the government has no current contracts with CA or with the SCL group.

"The allegations are clearly very concerning, it is absolutely right they should be properly investigated.

"I would expect Facebook, Cambridge Analytica and all organisations involved to comply fully with the investigation taking place."

CA suspended its CEO, Alexander Nix, yesterday, after footage was broadcast of him boasting to undercover reporters that the firm could entrap politicians using bribes and beautiful Ukrainian women to give their clients political advantage.