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Enforcement Watch Roundup

Issue 48: January 2026

Enforcement Watch Roundup

Editor's note

Guy Wilkes - Mishcon de Reya
Guy Wilkes, Partner

Welcome to the 48th issue of Enforcement Watch, our three-times-a-year roundup of enforcement activity and look ahead.

The past four months have seen the FCA flex its enforcement muscles. The headline action: a £44 million penalty against Nationwide for AML systems failures. Familiar issues, but a penalty scale that underscores regulatory priorities. Once again, the FCA applied a proportionality adjustment without showing its workings.

The regulator is also expanding its use of criminal powers, securing its first data protection prosecution and maintaining pressure on insider dealing. Two significant disclosure decisions – on cross-border confidentiality obligations and collateral use of documents in tribunal proceedings – have important implications for firms facing regulatory scrutiny.

Looking ahead, the FCA's December proposals for comprehensive cryptoasset regulation (effective 2027) signal a fundamental shift, whilst final guidance on non-financial misconduct raises the question: will it actually change enforcement practice?

In this edition, we cover these developments and more, including essential analysis for regulated firms navigating this evolving landscape.

News
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FCA intensifies insider dealing enforcement

The FCA has ramped up its crackdown on insider dealing, with a flurry of enforcement actions wrapping up in late 2025 and early 2026. Tackling financial crime remains a key priority under the FCA's five-year strategy, and recent cases involving oil rig consultants, financial advisers, seasoned traders, and investment bank employees illustrate the breadth of the regulator's enforcement reach.

News
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Upper Tribunal confirms FCA's powers to use documents disclosed in proceedings on other regulatory/public functions

On 5 December 2025, the Upper Tribunal gave a direction that documents, information and witness statements provided to the Financial Conduct Authority that constituted confidential information (as defined in section 348 of the Financial Services and Markets Act 2000) are held by the FCA in accordance with sections 348 and 349 of FSMA but are otherwise not subject to any restriction preventing collateral use by the FCA.

News
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UK Crypto rules taking shape

On 16 December 2025, the FCA published its proposals for UK cryptoasset rules. The proposals are set out in the following consultation papers

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