James Burton and Vanessa Allen report:
Lloyds Bank chiefs are investigating if an insider plot to undermine Antonio Horta-Osorio was behind revelations that he allegedly spent a weekend with a mistress on a business trip to Singapore.
There are fears that sources within the chief executive’s inner circle leaked embarrassing claims that the married father of three has been conducting an affair.
Packages of private information from his personal office are thought to have been sent anonymously to the Press as part of an alleged smear campaign.
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