UK Sanctions Post-Brexit: A Separate Regime

Before Brexit, the UK's sanctions regime was essentially the EU's sanctions regime. UK financial institutions screened against EU Consolidated List designations, and new designations flowed automatically from Brussels to London. Post-Brexit, the UK operates an entirely independent sanctions framework under the Sanctions and Anti-Money Laundering Act 2018 (SAMLA) and administered by the Office of Financial Sanctions Implementation (OFSI) within HM Treasury. For firms with UK regulatory obligations, understanding the UK sanctions regime — its composition, its divergence from EU sanctions, and its enforcement track record — is now a distinct and non-trivial compliance discipline.

The UK Sanctions Framework

SAMLA 2018 provides the primary legislative authority for UK financial sanctions, enabling HM Government to impose asset freezes, investment bans, financial restrictions, and other economic measures by statutory instrument. The UK's sanctions programmes span multiple geopolitical contexts and objectives: counterterrorism, nonproliferation, country-specific political objectives (Russia, Iran, North Korea, Belarus, Myanmar, Afghanistan, etc.), and thematic programmes (Global Anti-Corruption, Cyber, Human Rights). Each programme is implemented through a separate statutory instrument, with its own scope, prohibitions, and licensing provisions.

The UK Consolidated List — maintained by OFSI and updated by HM Treasury — lists all designated persons subject to UK financial sanctions. As of early 2026, the Consolidated List contains several thousand entries across all programmes. OFSI publishes list updates in near-real-time through its financial sanctions notices service, and firms are expected to screen against the current list on an ongoing basis.

OFSI: Structure and Enforcement Powers

OFSI was created in 2016 specifically to implement and enforce financial sanctions in the UK. Its responsibilities include: maintaining the UK Consolidated List, issuing licences permitting otherwise prohibited transactions, providing guidance to the private sector on compliance, and enforcing sanctions violations. OFSI has civil enforcement powers under the Policing and Crime Act 2017, which were significantly strengthened by the Economic Crime (Transparency and Enforcement) Act 2022.

The 2022 Act introduced a "strict liability" standard for most OFSI civil penalties — meaning that OFSI does not need to prove that a firm knew it was violating sanctions, only that the violation occurred. This is a significant departure from the previous "reasonable cause to suspect" standard and dramatically increases the potential for inadvertent sanctions violations to result in civil penalties. The Act also increased the maximum civil penalty from the greater of £1 million or 50% of the breach value to the greater of £1 million or 50% of the breach value — effectively removing the cap in cases involving very high-value transactions. OFSI also gained powers to publicly name entities that committed breaches even where no penalty is imposed, a significant reputational consequence.

UK vs EU Sanctions: Divergence Since Brexit

In the immediate post-Brexit period, UK and EU sanctions lists were broadly aligned, as the UK had transposed EU designations and the G7 was acting in concert on major programmes like Russia. However, divergence has been accumulating since 2020, and for firms operating in both jurisdictions, the differences now create material dual-compliance obligations.

Key areas of divergence include:

• Designated persons list differences: The UK and EU have made some autonomous designations — individuals or entities listed by one jurisdiction but not the other. This is particularly evident in the Russia and Belarus programmes, where the UK and EU have sometimes moved at different paces and with different selection criteria.
• Sectoral sanctions scope: The UK's Russia sanctions include restrictions on specific sectors (financial services, energy, transportation, military goods) that do not perfectly mirror the EU's sectoral restrictions. Transaction analysis for UK compliance cannot simply rely on EU compliance assessments.
• Licensing frameworks: The OFSI licensing regime and the EU sanctions licensing regime are structurally similar but operationally distinct. Firms that need to conduct otherwise prohibited activity — for example, legal fees for a designated person — must obtain separate UK and EU licences if they operate in both jurisdictions.
• Crypto-assets: The UK's sanctions have been updated to explicitly apply to crypto asset transactions, including provisions in the Russia sanctions that prohibit providing crypto asset exchange and custodian wallet services to designated persons. The EU has parallel provisions but the specific scope and thresholds differ.

Russia Sanctions: The Dominant Programme

Russia sanctions — imposed following the invasion of Ukraine in February 2022 and subsequently expanded — now represent the largest and most commercially significant component of the UK sanctions landscape. The Russia (Sanctions) (EU Exit) Regulations 2019, as repeatedly amended, cover: asset freezes on designated individuals and entities; prohibition on dealing with transferable securities and money-market instruments issued by listed Russian entities; import and export restrictions on specified goods; provision of financial services restrictions; and prohibitions on making funds available to or for the benefit of Russian businesses in specified sectors.

The breadth of the Russia programme creates significant compliance complexity. The interaction between the financial services prohibitions, the sectoral restrictions, and the asset freeze provisions requires careful analysis of individual transactions. The OFSI General Licences — which permit certain categories of transactions (such as those necessary for the wind-down of existing contracts or the receipt of payment for pre-sanctions services) — provide limited relief but must be carefully assessed before reliance.

Licensing: When It Is Available

OFSI can issue licences permitting otherwise prohibited transactions. Licences may be general (applying to all persons falling within defined criteria) or specific (applying to a named applicant for a specific transaction). Grounds for licensing include: basic needs (enabling designated persons to pay for food, utilities, legal advice); diplomatic and consular activities; humanitarian assistance; and prior obligations (completing transactions entered into before designation).

Firms contemplating transactions that may involve designated persons should not assume a licence will be granted. OFSI's licensing decisions are case-specific, and the process takes time. Firms that proceed with a transaction while a licence application is pending — rather than waiting for OFSI's decision — do so at their own risk. Legal advice should be obtained before proceeding with any transaction that raises sanctions concerns.