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UK KYC and AML Updates in 2026: What Law Firms Actually Need to Know

Introduction

KYC and AML obligations for UK law firms are not standing still. While the core regulatory framework remains familiar, recent updates to guidance and supervisory expectations in 2025 have sharpened how firms are expected to assess risk, document decisions, and evidence compliance.

For law firms, the challenge is no longer understanding what KYC and AML are — it is keeping pace with how regulators expect them to be applied in practice.

This article summarises the most relevant KYC and AML developments affecting UK law firms in 2025 and what they mean in day-to-day operations.

Updated AML Guidance for the Legal Sector

The Legal Sector Affinity Group (LSAG) guidance — approved by HM Treasury and relied upon by the Solicitors Regulation Authority (SRA) — remains the cornerstone of AML compliance for law firms.

Recent updates reinforce several key themes:

  • A risk-based approach must be demonstrable, not assumed
  • Firms must clearly document why certain clients or matters are assessed as low, medium, or high risk
  • AML policies and procedures must reflect how the firm actually operates, not generic templates

For many firms, the regulatory risk lies less in failing to perform checks, and more in failing to evidence decision-making if challenged by the SRA.

Increased Focus on Source of Funds and Source of Wealth

One of the most notable shifts in supervisory tone is the emphasis on source of funds (SoF) and source of wealth (SoW).

Law firms are expected to:

  • Ask proportionate but meaningful questions about where funds originate
  • Escalate inconsistencies or unclear explanations
  • Retain records showing how conclusions were reached

This is particularly relevant in conveyancing, private client work, and corporate transactions where funds may pass through multiple entities or jurisdictions.

Enhanced Expectations Around Ongoing Monitoring

KYC is no longer viewed as a “one-off” onboarding exercise. Regulators increasingly expect:

  • Ongoing monitoring for higher-risk clients
  • Periodic review of client risk profiles
  • Updated checks where circumstances materially change

This creates operational pressure for firms relying on manual or fragmented processes.

What This Means for Law Firms

In practice, these updates mean firms must:

  • Treat AML compliance as an ongoing operational process, not a checklist
  • Ensure fee earners understand when and how to escalate concerns
  • Use systems that make compliance repeatable, auditable, and consistent

Technology-enabled KYC and AML workflows can play a key role in meeting these expectations without slowing down client onboarding.

Conclusion

UK KYC and AML obligations in 2026 are less about introducing brand-new rules and more about enforcing existing ones with greater scrutiny.

Law firms that can demonstrate clear risk assessments, consistent processes, and strong record-keeping will be best placed to meet regulatory expectations — and to onboard clients efficiently without unnecessary friction.