Gregg is a senior dispute resolution partner in our London office.
Gregg specialises in complex commercial disputes, including class actions, across a range of sectors, particularly the tech, energy and aviation sectors.
Based in London, he has previously practised from our Melbourne and Tokyo offices. He has extensive experience of heavyweight litigation, usually with a cross-border element, as well as international arbitration, regulatory investigations and litigation, and public inquiries.
Gregg has a particular focus on class action litigation, and he has conducted the defence of a range of class actions in the English High Court and the Competition Appeal Tribunal, as well as in Australia. He is an editor and author of the leading English practitioner text on class actions, Class Actions in England and Wales, the second edition of which was published in September 2022 by Sweet & Maxwell, and a contributing author to the 3rd edition of Class Actions in Australia, published by Thomson Reuters in 2021.
Gregg is recognised by The Legal 500 as a key lawyer in Commercial litigation: premium and Competition litigation, and is described as “a highly experienced class actions lawyer”.
Gregg is an accredited mediator with the Centre for Effective Dispute Resolution.
Experience & capabilities
Selected matters
- AerCap in $3.5 billion Commercial Court proceedings concerning aviation insurance claims for aircraft lost in Russia following the invasion of Ukraine
- Amazon in relation to the UK Buy Box collective action in the Competition Appeal Tribunal
- Motorola in relation to the Airwave collective action in the Competition Appeal Tribunal
- an online retailer in relation to its defence of a high-value shareholder claim brought under section 90A of the Financial Services and Markets Act 2000
- Iveco and Fiat Chrysler in proceedings in the English High Court and the Competition Appeal Tribunal in relation to follow-on damages claims stemming from the European Commission’s settlement decision in Trucks
- Société Générale in relation to a $1.5 billion claim in the English Commercial Court by the Libyan Investment Authority in relation to a series of trades where there were allegations of bribery and intimidation
- the shareholders of Optal in a claim in the English Commercial Court relating to sale of the company where the buyer sought to rely on COVID as a Material Adverse Effect
- BP, ENI, Repsol Sinopec and JX Nippon in English Commercial Court proceedings under various gas sales agreements arising out of the prolonged shut-in of a North Sea field
- various aircraft lessors in relation to the termination of lease agreements, the repossession of aircraft and multi-jurisdictional litigation including in the English Commercial Court
- the State of Victoria (Australia) in defending multiple class actions for alleged economic loss arising from its hotel quarantine programme and the COVID restrictions across the state
- PricewaterhouseCoopers, Vocus and Murray Goulburn in defending multiple funded shareholder class actions in the Federal Court of Australia
Background
Gregg was educated at King's College London (LLB), Keble College, Oxford (BCL, MPhil) and Panthéon-Sorbonne, Paris (LLM). Prior to joining the firm, he practised at the bar for several years. He became a partner in the firm’s London office in 2014. He was seconded to the firm's Melbourne office from 2019-2021 and our Tokyo office from 2009-2010. He is admitted in England & Wales and Australia. He is fluent in French.
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