Tristan Jones

Led the counsel team successfully defending the Secretary of State for the Environment, Food and Rural Affairs in a case concerning trade in endangered species.

Tristan led the counsel team for Ofcom in successfully defending a wide-ranging challenge regarding Radio One Dance, a new BBC online radio stream.

Tristan acted as part of the team for British Sugar in this important case about EU state aid law as applied under the Northern Ireland Protocol; and about subsidies under the EU/UK Trade and Cooperation Agreement. 

Decision regarding the doctrine of state immunity in an employment context, and in particular its application to United States military bases in the United Kingdom.

Tristan acted for Dr Bell, a senior doctor, intervening in this high profile Court of Appeal decision concerning the circumstances in which children may consent to receive puberty-blocking drugs. 

Tristan was Advocate to the Court of Appeal in this wide-ranging decision regarding the courts' power to make injunctions against Persons Unknown.

Junior counsel in judicial review proceedings brought by a higher education provider in relation to the OfS's refusal to register it under the new regulatory regime under the Higher Education and Research Act 2017. The case was the first challenge to the OfS and raised issues of lawful delegation, the duty to consult, the public sector equality duty, A1P1, discrimination under Article 14 ECHR and proportionality.

Junior counsel for the Secretary of State in a challenge to the lawfulness, under retained EU law, of the so-called "immigration exemption" to the Data Protection Act.

The case is brought on behalf of 46.2 million consumers, for losses running to several billion pounds. It is the first application for certification under the new collective action regime to have reached the Supreme Court. The Supreme Court rejected Mastercard’s appeal. Tristan acted for the intervener, Which?.  

Tristan acted for the PSA Executive in what the PSA has called a “landmark case” against a provider offering a platform for premium rate services such as games and adult content. The PSA Tribunal found that Veoo knowingly failed in its due diligence obligations, failing to take adequate steps to ensure that consumers had opted in to the services provided by those companies using its platform. The Tribunal imposed an unprecedented £600,000 fine and prohibited Veoo from providing premium rate services for two years.

Tristan represented the Claimant in an Upper Tribunal appeal regarding the law concerning the deportation of a foreign criminal.

Judicial review regarding the test to be applied by the ASA when deciding whether an advertisement is misleading.  The advertisements in question concern fibre broadband.

Represented Westminster City Council obtaining an interim injunction which prevented Transport for London from commencing works on a cycle superhighway.  Tristan was also junior counsel in the subsequent judicial review ([2018] EWHC 2402 (Admin)).

Representing Vodafone in proceedings regarding the “5G” spectrum auction.

Tristan represented the Claimant in a five-day human rights damages action for alleged breaches in failing to recognise that the Claimant was a potential victim of human trafficking, and for failing to take steps to protect him.

Junior counsel to Ofcom in challenges to its Business Connectivity Market Review.

Counsel for Hutchison 3G in a challenge to Ofcom's decision on spectrum licence fees.

Junior counsel to the Claimants in a judicial review establishing that the Secretary of State must reconsider whether products which contain glucosamine are medicinal products. 

Represented the Secretary of State in a judicial review of a decision that deception had been used in an immigration application.

Counsel for Ms Jeffrey in a test case appeal on the retrospective nature of the Jobseekers (Back to Work Schemes) Act 2013.

Part of the interveners team in a case concerning constitutional protection of the rights of homosexuals.

Junior counsel to the claimants in a judicial review of changes to the provision of criminal legal aid.

Represented the respondent in an appeal to the Upper Tribunal concerning the entitlement to Employment and Support Allowance of women in domestic violence refuges.

Junior counsel to the respondent in claim for compensation under POCA (now settled).

Acted for the respondent in challenge to prisoner voting legislation.

Acted for the respondent in a judicial review of a decision relating to a prisoner’s sentence.

Junior counsel for the claimant in a challenge to the defendant’s decision not to grant Renewables Obligation Certificates in respect of certain electricity generating stations.

Junior counsel for the Claimant in a habeas corpus application on behalf of a man detained in Bagram prison.

Junior counsel to the Press Standards Board of Finance Ltd in relation to the Leveson Inquiry’s consideration of the appropriate framework for media regulation, including competition issues relating to self-regulation.

High Court claim for Francovich damages arising out of the Secretary of State's failure to regulate medicines in accordance with the Medicinal Products Directive. 

Tristan acted as part of a team for the Office for Students in this first judicial review brought against the new regulator.  The case raised questions regarding the new statutory framework for the regulation of higher education, and issues relating to the education provider's A1P1 property rights. 

Acted for Which?, the Consumers' Association, intervening in this Supreme Court case regarding authorised push payment fraud.

Acted for the CMA defending decision regarding abusive pricing on the pharmaceutical product Liothyronine.

Tristan acted for Betgenius in defending a standalone competition claim regarding sports betting data. The case settled early in the trial. 

Case concerning without prejudice privilege where communications relate partly to privileged issues and partly to wider commercial issues. 

Tristan acted for the proposed class representative in her application for a collective proceedings order against Google.

Tristan acted for the CMA in this challenge by Meta against the CMA's decision to prohibit Meta's acquisition of Giphy. The case raises important questions regarding the assessment of potential competition.

Tristan acted as part of the team for British Sugar in this important case about EU state aid law as applied under the Northern Ireland Protocol; and about subsidies under the EU/UK Trade and Cooperation Agreement. 

Junior counsel for the CMA in cartel penalty appeal raising important questions about the scope and proper application of the Authority's powers.

Junior counsel for the CMA in this challenge brought by Sabre Corporation for review under section 120 of the Enterprise Act 2002 of the CMA's decision preventing a merger between two companies active in the provision of IT solutions to airlines.  The case raises issues relating to the jurisdiction of the CMA in respect of foreign companies.

The case is brought on behalf of 46.2 million consumers, for losses running to several billion pounds. It is the first application for certification under the new collective action regime to have reached the Supreme Court. The Supreme Court rejected Mastercard’s appeal. Tristan acted for the intervener, Which?.  

High Court damages claim, concerning the question of whether the Medicinal Products Directive, which imposes regulatory and supervisory obligations on Member States, entails the grant of rights to individuals so as to provide the necessary foundation for Francovich damages.

Competition Appeal Tribunal decision regarding whether an additional party in a cartel damages claim is entitled to sue the claimants for a negative declaration.

Tristan is currently junior counsel to several groups of claimants in a damages claim arising out of the EU-wide cartel in trucks.

Decision on applicable law in multi-national damages litigation.

Junior counsel to the claimants in cartel damages action arising out of the European Commission's Bearings decision (CAT). [settled]

Junior counsel to the claimants in damages claims relating to the setting of interchange fees (Chancery division and CAT). Reported decisions in the case relate to jurisdiction and relation back.

Represented the Claimant in applications for an injunction and in preliminary issue trial on the question of whether the Defendant is an undertaking for the purpose of section 18 of the Competition Act 1998.

Junior counsel for the proposed class representative in the first proposed opt-out class action in the UK concerning infringements of competition law in the sale of mobility scooters. 

Junior counsel to one of the defendants, Polar Air Cargo LLC, in cartel damages action (Chancery division).

Junior counsel for the claimants in the first cartel follow-on damages to reach trial (prior to settlement).

Junior counsel to the applicant in a challenge to the CC’s decision to order divestiture of Ryanair’s holding in Aer Lingus.

Represented the claimants in follow-on damages claims in the High Court relating to copper tubes cartel (prior to settlement).

Junior counsel to Ryanair in proceedings relating to its acquisition of a minority stake in Aer Lingus.

Junior counsel to the Press Standards Board of Finance Ltd in relation to the Leveson Inquiry’s consideration of the appropriate framework for media regulation, including competition issues relating to self-regulation.

High Court claim for Francovich damages arising out of the Secretary of State's failure to regulate medicines in accordance with the Medicinal Products Directive. 

Tristan led the counsel team for Ofcom in successfully defending a wide-ranging challenge regarding Radio One Dance, a new BBC online radio stream.

Tristan acted for the PSA Executive in what the PSA has called a “landmark case” against a provider offering a platform for premium rate services such as games and adult content. The PSA Tribunal found that Veoo knowingly failed in its due diligence obligations, failing to take adequate steps to ensure that consumers had opted in to the services provided by those companies using its platform. The Tribunal imposed an unprecedented £600,000 fine and prohibited Veoo from providing premium rate services for two years.

Judicial review regarding the test to be applied by the ASA when deciding whether an advertisement is misleading.  The advertisements in question concern fibre broadband.

Representing Vodafone in proceedings regarding the “5G” spectrum auction.

Junior counsel to Ofcom in challenges to its Business Connectivity Market Review.

Junior counsel to the Altnets in appeals to the CAT relating to BT’s charges for Ethernet services.

Counsel for Hutchison 3G in a challenge to Ofcom's decision on spectrum licence fees.

Junior counsel to Ofcom in the ‘number porting’ appeal.

Junior counsel to Ofcom in the ‘VULA margin’ appeals.

Junior counsel for the interveners in appeals to the CAT and the Court of Appeal relating to BT’s charges for partial private circuits.

Tristan acted for Dr Bell, a senior doctor, intervening in this high profile Court of Appeal decision concerning the circumstances in which children may consent to receive puberty-blocking drugs. 

Tristan was Advocate to the Court of Appeal in this wide-ranging decision regarding the courts' power to make injunctions against Persons Unknown.

Tristan represented the Claimant in a five-day human rights damages action for alleged breaches in failing to recognise that the Claimant was a potential victim of human trafficking, and for failing to take steps to protect him.

Counsel for Ms Jeffrey in a test case appeal on the retrospective nature of the Jobseekers (Back to Work Schemes) Act 2013.

Part of the interveners team in a case concerning constitutional protection of the rights of homosexuals.

Represented the respondent in an appeal to the Upper Tribunal concerning the entitlement to Employment and Support Allowance of women in domestic violence refuges.

Acted for the respondent in challenge to prisoner voting legislation.

Acted for the respondent in a judicial review of a decision relating to a prisoner’s sentence.

Junior counsel for the claimant in a challenge to the defendant’s decision not to grant Renewables Obligation Certificates in respect of certain electricity generating stations.

Junior counsel for the Claimant in a habeas corpus application on behalf of a man detained in Bagram prison.

Tristan acted as part of a team for the Office for Students in this first judicial review brought against the new regulator.  The case raised questions regarding the new statutory framework for the regulation of higher education, and issues relating to the education provider's A1P1 property rights. 

Decision regarding the doctrine of state immunity in an employment context, and in particular its application to United States military bases in the United Kingdom.

Tristan represented the Appellant in this EAT appeal regarding the correct approach to an application to add an individual respondent to an employment claim after expiry of limitation.

Tristan represented the Claimant in the EAT appeal concerning the steps which a Tribunal is obliged to make to adjust the pre-trial process to enable a disabled litigant fully and fairly to participate in the proceedings. 

Tristan represented the Claimant in this EAT appeal concerning out of time amendments to pleadings. 

Tristan represented the Appellant in the Court of Appeal in an important decision regarding the meaning of a "provision, criterion or practice" in discrimination law, and the extent to which a one-off act may qualify.

Tristan represented the Appellant in the Employment Appeal Tribunal in a case concerning the treatment of medical evidence in an application to extend time for bringing a claim.

Tristan represented the Appellant in a case before the Employment Appeal Tribunal concerning the scope of the 'reasonable adjustments' duty.  The EAT held that being less efficient than non-disabled persons may constitute a relevant disadvantage within the Equality Act 2010, and that reasonable adjustments may include adjustments to make the disabled person more efficient.

EAT decision regarding the threshold for striking out a claim.

Tristan acted in two appeals before the Employment Appeal Tribunal concerning victimisation discrimination and the Police Conduct Regulations.

Represented Claimant in EAT case raising issues of disability discrimination and victimisation.

Represented the claimant in landmark Court of Appeal case concerning damages for stress at work in a discrimination context.

Junior counsel for the claimant (with Dinah Rose QC) in a test case on the lawfulness of the arrangements regarding part-time police inspectors’ pay.