When Does an English Court Need Expert Evidence on Russian Law?

Cross-border disputes involving Russia often reach English courts for reasons that have little to do with Russian litigation itself. A contract may be governed by Russian law. One party may be a Russian company. The authority of a Russian signatory may be disputed. A limitation issue may turn on Russian civil law. Sanctions, counter-sanctions or Russian procedural developments may affect performance, enforcement or parallel proceedings.

For solicitors, barristers, partners, disputes teams and in-house counsel in England and Wales, the key question is practical: when does Russian law become a matter requiring expert evidence, rather than a point that can be dealt with by submissions, translations or agreed materials?

This article gives a practical overview from the perspective of an independent Russian law expert. It is not advice on English procedural law. Any decision about pleadings, evidence, permission, timing or case strategy in English proceedings should be made by the solicitors and counsel conducting the case.

Russian law issues can arise in English litigation even where the dispute is being heard entirely in England. The most obvious example is a contract governed by Russian law. In that situation, the court may need to understand not only the wording of the Russian Civil Code or another statute, but also how Russian legal concepts, interpretative rules and court practice apply to the facts.

Russian law may also matter where the governing law is English law, but a specific issue depends on Russian legal status or Russian legal consequences. For example, an English court may need to consider whether a Russian company had capacity to enter into a transaction, whether a director or representative had authority to sign, whether a Russian insolvency or corporate restriction affected performance, or whether Russian proceedings have created procedural or enforcement risks.

The issue is usually not whether someone can translate a Russian statute. The real question is whether the court needs a reliable explanation of how Russian law operates in context.

In English proceedings, foreign law is commonly treated as a matter that must be pleaded and proved when a party relies on it. In FS Cairo (Nile Plaza) LLC v Brownlie, the Supreme Court discussed the treatment of foreign law, including the principle that foreign law, when relied on, is a matter which must be pleaded so the defendant knows the case it has to meet. The judgment also explains that the need for expert evidence depends on the nature of the issue and the relevant foreign law: sometimes the text of a foreign law may be enough, but sometimes skilled legal explanation by a lawyer expert in that system is required.

That distinction is important. Not every Russian law reference requires a full expert report. If the point is simple, agreed, immaterial or adequately established by an undisputed text and translation, the parties may not need extensive expert evidence. But where the issue is contested, material to liability or quantum, dependent on Russian legal interpretation, or affected by Russian court practice, expert evidence is often the safer and more useful route.

Russian law is a civil law system with its own statutory structure, terminology, judicial practice and procedural rules. A literal translation may miss the legal meaning. A Russian term may not map neatly onto an English legal concept. A rule that appears clear in isolation may operate differently when read together with court practice, mandatory provisions, corporate rules, limitation principles or sanctions-related measures.

Expert evidence in civil proceedings in England and Wales is governed by CPR Part 35. CPR 35.3 provides that an expert’s duty is to help the court on matters within the expert’s expertise, and that this duty overrides any obligation to the person who instructed or pays the expert. CPR 35.4 also provides that a party may not call an expert or put in evidence an expert’s report without the court’s permission.

For a Russian law expert, this means the role is not to act as a Russian-law advocate for the instructing party. The expert’s function is to assist the court by explaining Russian law accurately, independently and within the scope of the expert’s expertise.

Practice Direction 35 reinforces this point. It states that expert evidence should be the independent product of the expert, uninfluenced by the pressures of litigation; experts should provide objective, unbiased opinions and should not assume the role of an advocate; and experts should consider material facts, including those that may detract from their opinions.

This is particularly important in foreign law evidence. A credible Russian law report should not read like a pleading. It should identify the questions asked, the facts and assumptions relied on, the Russian legal sources considered, the reasoning process, any uncertainty, and any material contrary considerations.

An English court is more likely to need expert evidence on Russian law where the Russian law issue is both material and contested. The following examples are common in commercial and cross-border disputes.

1. A Contract Governed by Russian Law
If the contract contains a Russian governing law clause, the court may need expert evidence on formation, interpretation, validity, breach, termination, damages, penalties, interest, set-off, assignment, agency or force majeure under Russian law.
The issue may look familiar to an English lawyer, but the Russian legal analysis may differ. For example, Russian rules on invalidity, good faith, penalties, corporate approval, mandatory provisions or contractual performance may not operate in the same way as English law concepts with similar labels.

A Russian law expert can explain the relevant statutory provisions, how Russian courts approach similar contractual issues, and how those principles apply to the factual assumptions provided by the instructing solicitors.

2. A Russian Company Is a Party
Disputes involving Russian companies often raise questions of corporate capacity, authority, internal approvals, beneficial ownership, insolvency status or corporate governance.

For example, an English dispute may involve a Russian company that entered into a guarantee, loan, settlement, share purchase agreement or supply contract. The opposing party may argue that the Russian company lacked authority, that a signatory exceeded powers, or that corporate approval was required. These questions may require analysis of Russian company law, charter documents, powers of attorney, corporate resolutions, public registry information and Russian court practice.

A translation of the company’s charter may be helpful, but it may not answer the legal question. The court may need expert evidence on what the documents mean under Russian law and what legal consequences follow.

3. Limitation Periods and Time Bars
Limitation can be decisive. A Russian limitation issue may concern the length of the applicable period, the date when the period starts, suspension, interruption, acknowledgement of debt, procedural consequences, or the effect of prior Russian proceedings.

This is a good example of a point where expert evidence may be needed early. If Russian limitation is relevant to pleadings, service, jurisdiction, summary judgment, amendment or settlement strategy, waiting until trial may be too late. A short preliminary Russian law opinion can help solicitors assess whether a fuller expert report is required.

4. Sanctions-Affected Performance and Russian Countermeasures
Sanctions-affected disputes often involve more than one legal system. English, EU or US sanctions advice should be given by appropriately qualified local sanctions counsel. But foreign counsel may also need a separate Russian law analysis.

Russian law may be relevant to payment restrictions, performance impossibility arguments, mandatory Russian approvals, regulatory barriers, Russian countermeasures, parallel Russian proceedings, or the conduct expected from a Russian company or bank. The Russian law question may not be “is performance lawful under English sanctions law?” but rather “what does Russian law say about the party’s ability or obligation to perform, pay, terminate, sue, enforce or comply?”

A Russian law expert can work alongside English sanctions counsel by addressing the Russian law dimension only.

5. Russian Court Procedure and Parallel Proceedings
Russian court procedure may become relevant where there are existing or threatened Russian proceedings, enforcement steps in Russia, insolvency proceedings, interim measures, anti-suit issues, jurisdictional disputes, or questions about service and notice.

For example, a party in English proceedings may need to explain what happened in Russian arbitrazh court proceedings, whether a Russian procedural step has legal effect, whether a Russian judgment is final, whether an appeal is pending, or whether Russian proceedings create enforcement or parallel litigation risk.

This is rarely just a translation exercise. Russian procedural terminology and court practice often require explanation for an English litigation team.

A full CPR Part 35-style report may not be needed for every Russian law issue. In some cases, solicitors may first require a short scoping memorandum, a preliminary opinion, a conference with counsel, or a targeted note on whether Russian law is materially different from the position assumed in the pleadings.

A staged approach can be efficient:
First, identify the precise Russian law questions.
Second, determine whether the issue is material to the English proceedings.
Third, consider whether the issue is disputed or likely to be disputed.

Fourth, decide whether the court will need expert evidence, a shorter legal opinion, agreed foreign law materials, or no Russian law evidence at all.

This approach also helps avoid instructing an expert too late or too broadly. A Russian law expert should not be asked to write a general textbook on Russian law. The best instructions are focused, case-specific and tied to issues the court actually needs to decide.

A well-structured Russian law expert report should assist the court, not simply support the instructing party’s preferred outcome.
Under Practice Direction 35, an expert report should be addressed to the court, not to the instructing party. It must give the expert’s qualifications, identify materials relied on, set out the facts and instructions material to the opinions, summarise any range of opinion where relevant, give reasons for the expert’s own opinion, and include the required statement concerning the expert’s duty to the court.

In practical terms, a Russian law report should usually cover:

• the precise Russian law questions;
• the factual assumptions provided by the instructing solicitors;
• the Russian statutes, regulations, court practice or other legal sources considered;
• the expert’s reasoning;
• any qualifications or uncertainty;
• any materially different view that might reasonably be advanced;
• the expert’s conclusion in clear English.

For foreign law evidence, clarity matters. The report should explain Russian law in terms that English solicitors, counsel and the court can use, without oversimplifying or forcing Russian concepts into inaccurate English analogies.

Before instructing a Russian law expert, solicitors can save time and cost by preparing a concise instruction pack. The following checklist is usually sufficient for an initial conflict and scope review.

1. Parties for conflict check
Provide the names of all parties, affiliates, significant individuals, insurers, funders or other entities that may be relevant to conflicts.

2. Pleadings and key procedural documents
Send the claim form, particulars of claim, defence, reply, application notices, witness statements or draft pleadings if available.

3. Contract and governing law materials
Provide the main contract, amendments, side letters, guarantees, powers of attorney, corporate approvals and any Russian-language documents relevant to the Russian law issue.

4. Procedural order or timetable
Send any order dealing with expert evidence, directions, trial timetable, permission applications, report deadlines or questions to experts.

5. Proposed questions for the expert
The questions should be neutral, precise and tied to issues in the case. Avoid advocacy-driven wording such as “please confirm that our client is right”. A better question is: “Under Russian law, what authority was required for X to sign the agreement on behalf of the company, assuming the facts set out below?”

6. Deadline and required format
Clarify whether the immediate need is a preliminary view, litigation memorandum, CPR Part 35-style report, reply report, conference with counsel, or hearing support.

7. Assumptions and disputed facts
Identify which facts the expert should assume and which facts are disputed. A Russian law expert should not decide disputed factual issues unless specifically asked to explain the Russian legal significance of alternative assumptions.

8. Sanctions sensitivity
If the matter is sanctions-related, explain the relevant context and identify which issues are being handled by English, EU or US sanctions counsel. The Russian law expert’s role should remain focused on Russian law.

Early Russian law input can affect pleadings, disclosure, expert permission, settlement evaluation, factual evidence and cross-examination strategy. If Russian law is raised only shortly before the expert evidence deadline, the report may become reactive and less useful.

Early instruction is particularly important where Russian law affects limitation, corporate authority, validity, jurisdiction, sanctions-affected performance, Russian proceedings or enforcement risk. These issues can shape the direction of the case from the beginning.

For solicitors and counsel, the most effective approach is to identify the Russian law issue early, define the questions carefully, and decide whether the matter requires a preliminary opinion, a full expert report, or targeted input at a specific procedural stage.

I provide independent Russian law analysis for foreign law firms, counsel, disputes teams and in-house legal departments in matters involving English proceedings, international arbitration and cross-border disputes.

For an initial review, please send the parties’ names for conflict check, the forum, the procedural deadline, a short description of the Russian law issue, and the type of support required.