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How BlueCrest’s Michael Platt fell foul of the UK taxman - Financial Times

Reported by Ft
Jul 4, 2026· 2 min read
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Key Takeaways
  • • BlueCrest Capital Management lost a unanimous UK Supreme Court decision on a £200 million tax dispute, with the court ruling against the hedge fund's appeal regarding the tax treatment of certain staff members.
  • • The ruling exposes BlueCrest to £143 million in income tax payments plus more than £55 million in National Insurance contributions, totaling approximately £200 million in liabilities.
  • • Michael Platt's BlueCrest stated the UK is "no longer a serious contender" as a jurisdiction for conducting business following the Supreme Court's unanimous dismissal of its tax appeal.
  • • The case centered on how BlueCrest's traders should be classified and taxed, with UK tax authorities (HMRC) challenging the hedge fund's original tax treatment under a specific compensation structure.
  • • The defeat represents a significant loss for one of the UK's most prominent hedge fund managers and signals potential implications for how other financial services firms structure employee compensation arrangements.
Summary
BlueCrest Capital Management, the hedge fund owned by billionaire Michael Platt, suffered a decisive defeat in its long-running tax dispute with UK authorities when the Supreme Court unanimously dismissed the firm's appeal on Wednesday. The ruling concludes a protracted legal battle over the tax classification of certain staff members and leaves BlueCrest facing substantial financial obligations.

The financial impact is substantial. BlueCrest is now liable for £143 million in income tax payments alongside more than £55 million in National Insurance contributions, bringing total exposure to approximately £200 million. The Supreme Court's five-judge panel unanimously rejected BlueCrest's position that relevant members of staff should receive preferential tax treatment under the compensation structure the firm had implemented.

In response to the court's decision, BlueCrest issued a sharp rebuke of the UK regulatory environment. The hedge fund stated that Britain is "no longer a serious contender" as a jurisdiction for conducting business, signaling potential concerns about the firm's future operational footprint in the country. This public criticism from one of the UK's most prominent hedge fund operators carries weight in broader discussions about the competitiveness of London as a global financial hub.

The dispute centered on the tax treatment of a specific pay plan utilized by BlueCrest for its traders. HMRC challenged the hedge fund's original characterization of how these compensation arrangements should be taxed, ultimately prevailing at every level of judicial review. The unanimous Supreme Court decision reinforces the tax authority's position and eliminates any remaining avenue of appeal for BlueCrest.

The case carries broader implications for the financial services industry regarding how firms structure employee compensation and the tax treatment of such arrangements. Other hedge funds and financial institutions monitoring the outcome will likely reassess their own compensation frameworks in light of BlueCrest's decisive loss and the clear signal sent by the Supreme Court's unanimous ruling.

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Sources

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Ft How BlueCrest’s Michael Platt fell foul of the UK taxman - Financial Times