Viktoria Winzer

• Abramenko v Chuprin [2024] DIFC CFI 095 (ongoing) – Acting for the Claimants in a dispute over the ownership of a US$1 billion business where a sham trust is alleged, led by Rupert Reed KC and Rumen Cholakov in the DIFC. The case involved serious allegations of witness intimidation, forgery of documents, parallel foreign proceedings and resulted in over twenty interim applications being made. The trial is due to conclude in July 2026.
• 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) – resisting an application for permission to appeal to the Supreme Court from [2025] EWCA Civ 760. Assisted Liisa Lahti as a pupil acting for the successful Respondent.
• MPG v LifeSearch, Circuit Commercial Court (2025) – 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 veterinary practice. Assisted Cleon Catsambis as a pupil acting for the Defendant.

• Ashton v TSE Malta (2026) – Acting for the Defendant gambling operator in a widely-publicised three-week KBD trial of a negligence claim brought by the estate and dependants of a customer who committed suicide, led by Jonathan Hough KC and James Potts.
• A v B (2026) – Sole counsel for the successful Defendant gambling operator in a trial concerning the payment of historic gambling winnings which the Claimant had failed to claim within the contractually mandated time period.
• A v B (2026) – Sole counsel for the successful Defendant gambling operator in the trial of the Claimant’s negligence claim for the Defendant’s alleged failure to prevent the Claimant from suffering gambling losses.
• A v B (ongoing) – Instructed by the Defendant gambling operator in respect of a claim brought by one of its customers for payment of winnings that were erroneously attributed to the customer’s account by reason of a system malfunction. Led by Philip Hinks KC.

• A v Royal Bank of Scotland (2026) – Instructed as sole counsel by the Defendant bank in a claim for breach of contract following an alleged wrongful refusal to port a mortgage.
• A v Santander (2025) – Instructed as sole counsel by the Defendant bank in relation to an unfair relationship claim (ss. 140A-C of the Consumer Credit Act 1974) arising out of the provision of an agreed overdraft facility.
• A v FCA, Upper Tribunal (2025) – 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.

Viktoria completed an MPhil at the 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 HKIAC arbitration arising out of the falling-out between a commodities trading company and a Chinese state-owned enterprise over a joint venture agreement.

• 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, HKIAC (2025) – HKIAC arbitration arising out of the falling-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.

• 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. 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.

• 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.