Viktoria Winzer

• A v B, HKIAC (2025) – on-going HKIAC arbitration arising out of the fall-out between a commodities trading company and a Chinese state-owned enterprise over a joint venture agreement, with related proceedings in the BVI and Hong Kong. Assisted Peter de Verneuil Smith KC as a pupil.

• A v FCA, Upper Tribunal (ongoing) – referral of an FCA Decision Notice arising out of an alleged cum-ex arbitrage fraud against the Danish government. The referral raised a novel point as to the applicability of the Equality Act 2010 to the FCA. Acting for the Applicant, led by Saima Hanif KC.
• A v B, pre-action (2024) – claims under s. 140A of the Consumer Credit Act 1974 relating to mortgage products under which the lender became entitled to a share of the appreciation of the value of the security. Assisted Andrew Sutcliffe KC as a pupil acting for the intended Claimants.
• A v B, Circuit Commercial Court (2024) – proprietary and contractual dispute between a digital e-wallet services provider and an electronic money institution concerning the repayment of sums and damages for wrongful termination. Assisted Cleon Catsambis as a pupil acting for the Defendant.

• Abramenko v Chuprin [2024] DIFC CFI 095 (ongoing) – DIFC proceedings seeking declaratory relief as to the validity of a trust, contrary to the Defendant’s contention that the trust is a sham. The expedited trial is listed for March 2026. Acting for the Claimants, led by Matthew Watson and Rumen Cholakov.
• A v B, DIFC (2025) – DIFC freezing injunction application in support of foreign fraud proceedings in the sum of ca. ½ billion USD. Assisting George McPherson as a pupil acting for the Respondent.
• A v B, Commercial Court (2025) – personal and proprietary fraud claims (in deceit and unlawful means conspiracy) against multiple Defendants arising out of substantial investments in a purported property investment fund, including various applications relating to a freezing order and the provision of information. Assisted Anthony Pavlovich as a pupil acting on behalf of the Claimants.

• Citrosuco GmbH v KSY Juice Blends UK Limited UKSC/2025/0115 (2025): application for permission to appeal to the Supreme Court from [2025] EWCA Civ 760. Assisted Liisa Lahti as a pupil acting for the Respondent.
• MPG v LifeSearch, Circuit Commercial Court (2025) – four-day trial of a claim arising out of the termination of an agency agreement between a life insurance broker and its agents. Assisted George McPherson as a pupil acting for the Defendant.
• A v B, Circuit Commercial Court (2024) – proprietary and contractual dispute between a digital e-wallet services provider and an electronic money institution concerning the repayment of sums paid pursuant to contractual arrangements and damages for wrongful termination. Assisted Cleon Catsambis as a pupil acting for the Defendant.
• Uni-Ventures Solutions XXV v Mrsool Holdings & Ors ADGM-2024-239 (2024) – contractual and unfair prejudice claim in the ADGM, including resisting an application for an interim injunction (the first application of this kind in the ADGM). Assisted Yash Bheeroo as a pupil acting on behalf of the Respondent.
• A v B, Circuit Commercial Court (2024) – contractual claim arising out of the sale of a veterinarian practice. Assisted Cleon Catsambis as a pupil acting for the Defendant.

• Tinkler v Invesco Asset Management Limited [2025] EWHC 1624 (Ch) – long-running dispute between a company and its former director, which was successfully struck out by the Defendants for abuse of process as the Claimants attempted to relitigate matters that had been previously decided. Assisted Cleon Catsambis as a pupil acting for three of the Defendants.
• Asertis Ltd v Bloch, High Court (2024) – claim against a company director for allegedly breaching his director’s duties by permitting payments to be made out of the company’s account. Assisted Cleon Catsambis as a pupil acting for the Defendant.

• Asertis Ltd v Bloch, High Court (2024) – claim against a company director for allegedly breaching his director’s duties by permitting payments to be made out of the company’s account. Assisted Cleon Catsambis as a pupil acting for the Defendant.
• Worman v Worman, High Court (2025) – unfair prejudice claim in relation to a family business. Assisted Anthony Pavlovich as a pupil acting for the petitioner.

• Vesnin v Queeld Ventures Ltd and Others [2025] EWCA Civ 951 – joint appeals concerning, amongst other things, the enforcement of a Russian bankruptcy in England. Assisted Anthony Pavlovich as a pupil.
• Tinkler v Invesco Asset Management Limited [2025] EWHC 1624 (Ch) – long-running dispute between a company and its former director. Assisted Cleon Catsambis as a pupil inter alia in relation to the question whether service could be opposed (acting for three of the Defendants).
• Before coming to the Bar, Viktoria worked as a research assistant for Sir Richard Aikens including on conflicts of laws issues in insurance cases.

• A v B, pre-action (2025) – claim arising under a professional risks insurance policy for the costs of remedying construction defects. Assisting Peter Ratcliffe as a pupil in advising the insurer.
• Before coming to the Bar, Viktoria worked as a research assistant for Sir Richard Aikens including on conflicts of laws issues in insurance cases.

• A v B, pre-action (2025) – negligence claim against an insurance broker in relation to a business interruption insurance policy. The facts raised novel points of law on the quantification of damages for ‘loss of a chance’. Assisted Tom Weitzman KC in advising the broker.
• Avison v Harold Bell Infields & Co [2025] EWHC 1787 (Ch) – solicitors’ negligence claim. Assisted Anthony Pavlovich as a pupil in successfully opposing a strike out application by the Defendant.

• A v FCA, Upper Tribunal (ongoing) – referral of an FCA Decision Notice arising out of an alleged cum-ex arbitrage fraud against the Danish government. The referral raised a novel point as to the applicability of the Equality Act 2010 to the FCA. Acting for the Applicant, led by Saima Hanif KC.

Viktoria completed an MPhil (University of Oxford) in unjust enrichment and has published on this topic in the Law Quarterly Review (October 2022, cited in the current edition of Goff & Jones, The Law of Unjust Enrichment). She has also gained practical experience in this area, having assisted Peter de Verneuil Smith KC during pupillage in providing advice on liability in unjust enrichment in an on-going HKIAC arbitration arising out of the fall-out between a commodities trading company and a Chinese state-owned enterprise over a joint venture agreement.