Keydata founder Stewart Ford has lodged a complaint with the FSA alleging that the regulator delivered his confidential copy of the Keydata preliminary investigation report to his ex-wife.
The complaint, seen by Money Marketing, claims that in August the FSA delivered a 5,000-page package of sensitive documents, held on unencrypted discs, to Ford’s ex-wife in Glasgow.
Ford says a separate copy was also sent to his lawyers.
He says: “This is incompetence beyond belief, especially as the regulator knew to deal with my lawyers and had my Swiss address. The implications of what the FSA has done are significant.”
An FSA spokeswoman says the FSA does not comment on the individual complaints it receives.
Money Marketing revealed last month that the FSA had come under attack from the Complaints Commissioner for the way in which it delivered its preliminary investigation reports to Keydata director Mark Owen and head of compliance Peter Johnson in August.
Ford has launched judicial review proceedings against the FSA over the way it carried out its investigation into Keydata, which will be heard at the High Court in London on July 21.
The FSA began investigating Keydata in December 2007 and says its investigation is at an advanced stage.
Keydata was put into administration in June 2009, with complaints relating to Keydata triggering an interim Financial Services Compensation Scheme levy of £326m in January this year.
In April, the Serious Fraud Office announced it had dropped its investigation into Keydata, citing a lack of evidence.
A statement on the SFO website says the SFO is continuing in its attempts to trace the £100m assets invested in Luxemburg-based vehicle SLS Capital and will provide a further update in July.