Eesvan is an experienced junior with core strengths in public law & human rights, commercial law, and EU & competition law. His work tends to raise novel and complex issues at the intersection of those areas of law, often in the context of group litigation. Many of his cases raise questions of foreign law or public international law (e.g. the scope of State Immunity and Foreign Act of State).
Current/recent examples of Eesvan's work include: advising the government of a British Overseas Territory on the reform of its aviation and maritime laws (2026-present); advising on public international law, human rights, and EU/competition law issues arising in a leading piece of climate litigation in a European court (2023-present); representing a bank in the recovery of a large debt from a foreign-domiciled debtor (2025-2026); advising a religious organisation on a sensitive issue of international human rights law (2025); advising a leading NGO on a decision by the Aarhus Convention Compliance Committee (2025); advising a social media company on applicable human rights and humanitarian law standards during times of armed conflict (2022); advising on the prospects of a claim against a leading technology company for breach of data protection and competition law (2023); and advising the Elliott Claimants in R (Elliott) v London Metals Exchange, one of The Lawyer's Top 20 cases of 2023.
Eesvan has acted in and advised on public law and regulatory matters as diverse as the use of post-offer undertakings under the Takeover Code, the issuing of mining licenses, and questions of legal professional privilege in the context of a corporate self-report to the Serious Fraud Office (in one of The Lawyer's Top 20 Cases of 2017 and 2018, SFO v ENRC). Eesvan was also part of the counsel team acting for the Elliott Claimants in R (Elliott) v London Metals Exchange, one of The Lawyer's Top 20 Cases of 2023.
“He brings endless energy and positivity.”
Legal 500, 2021
Led by Monica Carss-Frisk KC and Iain Steele, Eesvan acted for one of the claimants in a judicial review of an unprecedented decision by the London Metals Exchange to cancel transactions in the nickel market.
Acted for Novartis in an EU law challenge to the use of unlicensed medicines within the NHS in place of licensed alternatives (led by Tom de la Mare QC).
Acted for the claimant in a landmark JR in Bermuda concerning an application by a non-Bermudian for a licence to acquire land (led by Michael Fordham QC).
Acted for the Serious Fraud Office in the landmark case concerning legal professional privilege in the context of a corporate 'self-report' (led by Jonathan Fisher QC and James Segan).
Advised the Panel on Takeovers and Mergers on various questions arising from the giving of post-offer undertakings under the Takeover Code (with Michael Fordham QC).
Assisted a firm re representations to the Oil & Gas Authority on the grant of a methane drainage licence (with Michael Fordham QC)
Acted for the Lord Chancellor in resisting permission to judicially review the process of setting the personal injury discount rate under the Damages Act 1996 (with Timothy Otty QC).
Acted for the claimants in a judicial review of the removal of the exemption for renewable source electricity from the Climate Change Levy (with Michael Fordham QC and Jason Pobjoy).
Eesvan has a long-standing interest in civil liberties and human rights, having lectured, researched, and volunteered in the field.
As a law student, Eesvan assisted counsel for the detainee in Zaoui v Attorney General [2005] 1 NZLR 666; [2006] 1 NZLR 289 (SC), New Zealand’s first case of detention on the grounds of national security.
Eesvan co-founded student pro bono programmes at the two universities in which he studied. In 2005, he co-founded The Equal Justice Project, the first such programme at the University of Auckland. In 2009, he co-founded Oxford Legal Assistance, the first undergraduate pro bono law clinic at the University of Oxford.
Led by Harish Salve KC, Eesvan advised a religious organisation on a sensitive question of international human rights law.
Led by Tom Weisselberg KC and Jason Pobjoy, Eesvan represented the UK in a request for a referral to the Grand Chamber.
Led by Shaheed Fatima KC, Eesvan advised a leading technology company on human rights standards applicable to social media during times of armed conflict.
Acted for a group of antique dealers/collectors in a challenge to the proportionality of the ban in the Ivory Act 2018 on trade in antique ivory (led by Tom de la Mare QC). The case raised issues including the threshold for deployment of the precautionary principle and whether, as a matter of EU law, a greater margin of appreciation applied because the relevant decision was taken by Parliament.
Acted for the Lord Chancellor in defending a challenge under Art 6 ECHR / common law to the removal of the right to an oral hearing when seeking permission to appeal to the Court of Appeal (led by Shaheed Fatima QC). Permission for JR successfully resisted.
Acted (with Philip Havers QC, Adam Straw, and Adam Sandell) for the claimant in a novel JR seeking to challenge the ban on assisted suicide.
Acted for a refugee charity challenging the consultation process by which the SSHD fixed the number of unaccompanied asylum-seeking children to be relocated from Calais to the UK (with Nathalie Lieven QC and Laura Dubinsky).
Advised the Metropolitan Police on legal questions arising from an investigation into phone hacking (with Michael Beloff QC).
Eesvan has acted in a wide range of commercial matters, often those with an international dimension.
Led by Andrew George KC and Simon Pritchard, he recently acted for a bank seeking to recover a substantial debt from a foreign-domiciled debtor.
Led by Shaheed Fatima KC, he acted in landmark Commercial Court litigation concerning the chairmanship of the Libyan sovereign wealth fund.
Led by Tom Weisselberg KC and David Lowe, Eesvan acted for an international hotel chain in two substantial international arbitrations. .
Led by Andrew George KC and Simon Pritchard, Eesvan acted for a major bank in pursuing recovery of a substantial debt from a foreign-domiciled debtor. The case raised novel substantive and procedural issues under the Consumer Credit Act 1974.
Led by Monica Carss-Frisk KC and Iain Steele, Eesvan acted for one of the claimants in a judicial review of an unprecedented decision by the London Metals Exchange to cancel transactions in the nickel market.
Led by Shaheed Fatima KC, Eesvan acted for a leading sporting organisation in a jurisdictional challenge to a group claim on the grounds of Foreign Act of State.
Acted for an international hotel chain in an ICC arbitration (London seat) in a challenge under ss.67 and 68 Arbitration Act 1996 to an arbitral award concerning allegations of misrepresentation and fraud. Led by Tom Weisselberg KC and David Lowe.
Acted for an international hotel chain in an LCIA arbitration (London seat) against a franchisor. The claim raised issues of contractual interpretation, implication of terms, breach, causation, and quantification of damages. Led by Tom Weisselberg KC and David Lowe.
Led by Shaheed Fatima KC, Eesvan advised on procedural options available to a mining company in the context of a prospective group litigation claim. This involved consideration of both English civil procedure and substantive legal issues arising under a foreign law.
Acted (with Shaheed Fatima QC) for one of the Respondents in a dispute as to the Chairmanship of the Libyan Investment Authority. The case raised various novel issues, including the scope/effect of the 'one voice' doctrine regarding the recognition of foreign governments. In March 2020, the Commercial Court gave judgment on various Libyan law issues after a one-week trial: [2020] EWHC 696 (Comm). In May 2020, the Court of Appeal gave judgment on the 'one voice' point: [2020] EWCA Civ 637.
Eesvan has significant experience of advising and representing clients in disputes raising novel issues of public international law, such as State Immunity and Foreign Act of State. He is currently carrying out two substantial and long-term pieces of advisory work: advising the government of a British Overseas Territory on the reform of its aviation and maritime laws; and advising on novel questions of public international law (and EU/competition and human rights law) arising from a leading piece of climate litigation in a European court.
Led by Sir Jeffrey Jowell KC and Emily Neil, Eesvan is currently advising the government of a British Overseas Territory on the reform of its aviation and maritime laws.
Led by Shaheed Fatima KC and Tom de la Mare QC, Eesvan is advising on various novel issues of public international law, EU & competition law, and human rights law arising in high-profile climate litigation before a European court.
Led by Shaheed Fatima KC, Eesvan acted for a leading sporting organisation in a jurisdictional challenge to a group claim on the grounds of Foreign Act of State.
Led by Shaheed Fatima KC, Eesvan advised a leading technology company on human rights standards applicable to social media during times of armed conflict.
Acted (with Shaheed Fatima QC) for one of the Respondents in a dispute as to the Chairmanship of the Libyan Investment Authority. The case raised various novel issues, including the scope/effect of the 'one voice' doctrine regarding the recognition of foreign governments. In March 2020, the Commercial Court gave judgment on various Libyan law issues after a one-week trial: [2020] EWHC 696 (Comm). In May 2020, the Court of Appeal gave judgment on the 'one voice' point: [2020] EWCA Civ 637.
Led by Shaheed Fatima QC, Eesvan recently advised a senior state official on issues concerning foreign act of state and state immunity arising in ongoing proceedings in the English courts.
Eesvan is currently advising on EU & competition law issues arising in a leading piece of climate litigation before a European court.
Eesvan acted for the claimants in a substantial follow-on damages claim in the Chancery Division arising from the setting of interchange fees by MasterCard (with Kieron Beal QC and Tristan Jones). The substantive claim was settled, after judgments on various issues in the Chancery Division ([2015] EWHC 3749 (Ch)), the Competition Appeal Tribunal ([2017] CAT 14; [2017] Bus LR 63], and the Court of Appeal ([2017] EWCA Civ 272).
Eesvan has also conducted training in EU competition law.
Having studied and taught economics, Eesvan has a good working knowledge of the economics of competition law.
On EU law more generally, Eesvan recently acted (with Tom de la Mare KC) for Novartis in a challenge to an NHS policy on the grounds of compatibility with the EU Medicines regime (see Novartis v Darlington CCG et al, above). He has also advised on the prospects of a claim against a leading technology company for breach of competition and data protection law.
Led by Shaheed Fatima KC and Tom de la Mare QC, Eesvan is advising on various novel issues of public international law, EU & competition law, and human rights law arising in high-profile climate litigation before a European court.
Acted for Novartis in an EU law challenge to the use of unlicensed medicines within the NHS in place of licensed alternatives (led by Tom de la Mare QC).
Led by Tom de la Mare KC, Eesvan advised on the prospects of a claim against a leading technology company for breach of data protection and competition law, arising from allegations of the unlawful harvesting of user data.
See above.
In recent years, Eesvan has acted on a number of significant examples of group litigation in a variety of contexts, including competition, data protection and alleged mass torts. In addition to often novel questions of procedure, these cases have typically involved consideration of foreign law, European law, and/or public international law.
Led by Shaheed Fatima KC, Eesvan acted for a leading sporting organisation in a jurisdictional challenge to a group claim on the grounds of Foreign Act of State.
Led by Tom de la Mare KC, Eesvan advised on the prospects of a claim against a leading technology company for breach of data protection and competition law, arising from allegations of the unlawful harvesting of user data.
Led by Shaheed Fatima KC, Eesvan advised on procedural options available to a mining company in the context of a prospective group litigation claim. This involved consideration of both English civil procedure and substantive legal issues arising under a foreign law.
Eesvan has a keen interest in financial services law and has acted in a number of financial services disputes, including (led by Andrew George QC) one of the first proceedings for compensation under s.90 FSMA (compensation for statements in listing particulars of prospectus). He has also advised on a wide range of financial services matters, such as the approved persons regime, the scope of the Conduct of Business sourcebook, responsibilities in relation to appointed representatives, pensions regulations, and the jurisdiction of the Financial Ombudsman Service.
Eesvan also advised the Qatar Financial Centre Regulatory Authority on an investigation into the conduct of an insurance intermediary.
Eesvan recently advised the FCA on a dispute arising concerning the interepretation of its FEES handbook.
In 2014-2015, Eesvan was seconded to the Financial Conduct Authority for five months, where he worked in the General Counsel’s Division. Eesvan’s primary responsibility was to draft an FCA rules instrument amending the FCA Handbook to implement part of the Mortgage Credit Directive 2014/17/EU. Eesvan also advised on a variety of other matters such as the supervision of firms and the scope of the FCA’s regulatory responsibilities.
Led by Andrew George KC and Simon Pritchard, Eesvan acted for a major bank in pursuing recovery of a substantial debt from a foreign-domiciled debtor. The case raised novel substantive and procedural issues under the Consumer Credit Act 1974.
Advised and acted for an entity re a claim against a bank for breach of the Quincecare duty (with Tony Peto QC). Eesvan represented the entity at a mediation, following which the claim settled.
Advised the Qatar Financial Centre Regulatory Authority with an investigation into the conduct of an insurance intermediary.
Acted for a Defendant in a claim under s.90 FSMA (with Andrew George QC). The case settled shortly before trial.
Advised an individual on a proposed claim in negligence and for breach of the FCA Conduct of Business Sourcebook for losses incurred in commodities trading.
Advised on the merits of a proposed claim under the FCA Conduct of Business Sourcebook and at common law in relation to anticipated losses under a collective investment scheme. Also advised as to the scope of the jurisdiction of the Financial Ombudsman Service.
Advised a firm on compliance obligations under the FCA approved persons regime arising from its purchase of an insurance broking business.
Advised the FCA on consequential changes to the FCA Handbook arising from the implementation of the Mortgage Credit Directive 2014/17/EU.
See above.
LLB and BCom (First Class Honours) (Auckland); BCL (Dist.) and DPhil in Law (Oxon)
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