Keydata founder Stewart Ford has been granted a judicial review into the FSA's handling of the collapse of his investment firm.
Ford has maintained the FSA made a "£450m cock-up" when it put Keydata into administration in 2009, and is expected to repeat the claims at the July hearing in London.
He has blamed decisons made by junior staff at the FSA, who he has accused of mis-leading the insolvency court during a hearing to decide Keydata's fate.
Ford has been under investigation by the Serious Fraud Office (SFO) over his involvement in the investment firm's collapse.
However the SFO said this month it has given up trying to prosecute anyone over the collapse of Keydata, as it has insufficient evidence to continue with the case, it has said.
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