UK's Financial Conduct Authority Wins London Whale Identity Case

The UK's Financial Conduct Authority (FCA) won a landmark case in the the U.K. Supreme Court over the identification of individuals in its public censure notices, overturning decisions in the lower courts that had threatened to complicate the FCA’s ability to enforce market rules. The case was brought against the FCA by Achilles Macris, the former JP Morgan executive who managed the 'London Whale' trader.

The UK Supreme Court ruled that the FCA did not improperly identify Achilles Macris in 2013.

Financial Conduct Authority (Appellant) v Macris (Respondent)

Judgment date

22 Mar 2017

Neutral citation number

[2017] UKSC 19

Case ID

UKSC 2015/0143

Justices

Lord Neuberger, Lord Mance, Lord Wilson, Lord Sumption, Lord Hodge

Judgment details

• Judgment (PDF)
• Press summary (PDF)
• Judgment on BAILII (HTML version)