Banning Russian Citizens from the United Kingdom: Sanctions, Law and the Limits of Collective Responsibility

By Matthew Parish, Associate Editor

Tuesday 17 March 2026

The United Kingdom has, since the Russian invasion of Ukraine in 2022, assembled one of the most extensive sanctions regimes ever imposed upon a modern state. Russian banks have been cut off from the British financial system, oligarchs’ assets frozen, superyachts impounded in London docks and hundreds of individuals subjected to travel bans and financial restrictions. Yet one proposal appears periodically in political discourse but has not been implemented in full: the possibility of banning Russian citizens as a class from entering the United Kingdom.

The question raises a series of complicated issues. It concerns not only the desirability of such a measure as an instrument of foreign policy but also its compatibility with British constitutional principles, immigration law and the United Kingdom’s obligations under international human rights law. Existing case law relating to sanctions against Russian individuals provides an important guide to how British courts might respond to such a policy were it ever adopted.

Here we consider three issues: whether such a ban would be realistic as a matter of law, whether it would be desirable as a matter of policy and whether legal challenges to it would likely succeed.

The Existing Structure of British Sanctions Law

The principal legal framework for sanctions in the United Kingdom is the Sanctions and Anti-Money Laundering Act 2018 (SAMLA), enacted after Brexit to give ministers the authority to impose sanctions through secondary legislation. These sanctions may include asset freezes, travel bans and restrictions on economic activity where the government considers them necessary to achieve foreign policy objectives. 

Under this legislation the government adopted the Russia (Sanctions) (EU Exit) Regulations 2019, which form the backbone of the UK’s Russia sanctions regime. These regulations allow the government to designate individuals associated with the Russian state, Russian business elites or sectors considered strategically important to the Kremlin. 

The breadth of these powers is significant. Courts have repeatedly recognised that the executive enjoys a wide margin of appreciation when determining how sanctions advance national security or foreign policy objectives. 

The policy rationale behind such sanctions is cumulative pressure. The courts have accepted that measures directed even at individuals with only indirect connections to the Kremlin may contribute to the overall aim of deterring Russian aggression. 

This principle has already been tested in a number of prominent cases.

The Shvidler Case and Judicial Deference

The leading modern case concerning Russian sanctions in the United Kingdom is the litigation brought by the businessman Eugene Shvidler. Shvidler, an associate of Roman Abramovich and himself a British citizen, challenged the government’s decision to impose an asset freeze upon him following the invasion of Ukraine.

His claim argued that the sanction violated his rights under the European Convention on Human Rights, particularly the right to peaceful enjoyment of property. The courts rejected these arguments at every stage of the proceedings. In 2025 the UK Supreme Court confirmed that the sanctions were lawful and proportionate. 

The court’s reasoning is instructive. It accepted that the measures were severe but held that severity is inherent to sanctions regimes intended to change the behaviour of foreign states. The objective of deterring Russian aggression was regarded as a legitimate aim of the highest political importance. 

Moreover the court concluded that the government was entitled to adopt measures contributing to collective pressure on the Russian elite, even where the individual targeted had no direct role in government policy. 

This decision set a high threshold for successful legal challenges to sanctions. Courts will scrutinise whether the government acted within its statutory powers and whether the measures are rationally connected to their objectives, but they generally avoid substituting their own judgment for that of ministers in matters of foreign policy.

Immigration Law and the Possibility of a Nationality-Based Ban

Sanctions legislation is not the only relevant legal framework. A ban on Russian citizens entering the United Kingdom would primarily operate through immigration law rather than financial sanctions.

The Immigration Act 1971 gives the Home Secretary broad discretion to exclude non-citizens whose presence is considered not conducive to the public good. In practice this power is often used to exclude individuals involved in terrorism, organised crime or hostile state activity.

However British immigration law historically operates through individualised assessments rather than categorical bans based on nationality alone. A blanket prohibition on Russian citizens would represent a significant departure from this tradition.

The United Kingdom has occasionally imposed nationality-based travel restrictions in response to geopolitical crises, but these have usually been partial measures, such as visa suspensions or enhanced security screening rather than absolute prohibitions.

In addition British law must operate consistently with the European Convention on Human Rights, incorporated into domestic law through the Human Rights Act 1998. While non-citizens have limited rights to enter a country, blanket discrimination on the basis of nationality could raise issues under the Convention’s prohibition on unjustified discrimination and its protection of family life.

Collective Sanctions and the Principle of Proportionality

One of the most significant legal obstacles to a nationality-based ban would be the doctrine of proportionality.

In the Shvidler litigation the courts held that sanctions were lawful because they targeted individuals connected to Russian power structures and because they formed part of a coherent strategy to pressure the Kremlin. 

A blanket prohibition on all Russian citizens would be much harder to justify under the same reasoning. It would affect millions of individuals with no connection whatsoever to the Russian state, including dissidents, refugees, academics and family members of British residents.

Courts applying the proportionality test would ask whether the measure pursued a legitimate aim, whether it was rationally connected to that aim and whether less intrusive measures could achieve the same objective.

While deterring Russian aggression would certainly qualify as a legitimate aim, the question of proportionality would be more difficult. Critics would argue that existing targeted sanctions already achieve the intended political pressure without imposing collective punishment on an entire nationality.

The Historical Warning of HM Treasury v Ahmed

Another relevant precedent is the earlier Supreme Court decision in HM Treasury v Ahmed, a case concerning anti-terrorism asset freezes. In that case the Court ruled that government orders freezing assets were unlawful because the statutory authority relied upon by ministers did not clearly authorise such severe interference with fundamental rights. 

The significance of Ahmed lies not in its outcome alone but in its constitutional reasoning. The Court emphasised that fundamental rights cannot be overridden by broad or ambiguous statutory language. Explicit parliamentary authority is required.

If the United Kingdom attempted to ban Russian citizens as a class from entering the country, courts would likely examine whether the enabling legislation clearly authorised such a sweeping measure. Without explicit statutory authority from Parliament (potentially involving new legislation), the policy might be vulnerable to judicial review.

Practical and Diplomatic Consequences

Even if legally possible, a nationality-based ban would raise significant diplomatic and strategic concerns.

One of the stated objectives of sanctions policy is to weaken support for the Russian government among elites and the broader population. The Supreme Court in Shvidler accepted that sanctions may encourage members of the Russian elite to distance themselves from the Kremlin or apply pressure on the regime. 

A blanket ban might undermine that objective. By closing Western societies to Russian citizens, it could reinforce the Kremlin’s narrative that Russia is collectively persecuted by the West.

Moreover such a policy would have humanitarian consequences. Many Russians living abroad are critics of their government or refugees from repression. Excluding them from Western countries could weaken the networks of exile communities that often form the nucleus of political change.

There are also practical enforcement issues. Determining who qualifies as a Russian citizen can be complicated in cases of dual nationality or statelessness. Immigration authorities would need to develop complex procedures to verify citizenship status and handle exceptions.

Would Legal Challenges Succeed?

If the United Kingdom introduced a comprehensive ban on Russian citizens entering the country, legal challenges would almost certainly follow.

The outcome would depend heavily on the precise structure of the policy. A measure enacted through clear primary legislation, explicitly authorising nationality-based restrictions in the context of sanctions, would be more likely to survive judicial review.

Even then courts would scrutinise whether the measure complied with human rights principles, particularly the prohibition on discrimination and the protection of family life under the European Convention.

Existing case law suggests that courts grant considerable deference to the government in matters of foreign policy and national security. The Shvidler judgment demonstrated that sanctions imposing severe hardship may still be considered lawful if they serve a legitimate geopolitical objective. 

However courts have also shown a willingness to intervene where executive action lacks clear statutory authority or disproportionately interferes with fundamental rights, as illustrated by HM Treasury v Ahmed. So there are two potentially inconsistent lines of judicial authority that would need to be reconciled.

A blanket nationality ban would likely fall somewhere between these precedents. It would face stronger legal scrutiny than targeted sanctions but might still survive if Parliament expressly authorised it and if the government could demonstrate that it was necessary to achieve a pressing national objective.

Some tentative conclusions

A policy banning Russian citizens from entering the United Kingdom would represent one of the most radical steps in modern British sanctions policy. It would be legally conceivable but politically and legally contentious.

The courts have shown substantial deference to the government’s sanctions regime, recognising the importance of responding decisively to Russia’s war against Ukraine. Yet they have also insisted that severe measures interfering with fundamental rights must rest upon clear statutory authority and satisfy the test of proportionality.

For these reasons a blanket ban on Russian citizens would likely face formidable legal challenges and would require explicit parliamentary approval to stand any realistic chance of surviving judicial scrutiny.

Whether it would be desirable is a different question. Sanctions are designed not merely to punish but to influence behaviour. Targeted sanctions aimed at elites may serve that purpose more effectively than broad measures that risk alienating the very populations whose support for the Kremlin the West hopes ultimately to weaken.