The Financial Services Authority (FSA) has told firms to ignore a scam email telling them the regulator intends to take action agaisnt them for tax evasion.
Appearing to be sent from the address [email protected], the email says "a criminal complaint has been filled [sic] against your company" and that "your company is being accused of trying to commit tax evasion schemes".
To make it appear genuine, it includes a correct email address and telephone number to contact the regulator directly.
However, the FSA has said recipients should not reply to the message or click on any of the links provided.
It added: "We can confirm that this is a scam email and it has not been sent by us. We do not send emails to firms about matters such as this, and in fact do not even deal with tax evasion."
The FSA has previously warned businesses and consumers about about scam emails requesting personal and financial information.
They have included versions claiming to be directly from chief executive Hector Sants and chairman Lord Turner.
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