Mark Chesher

Mark Chesher is a stalwart of civil fraud litigation in London and brings his experience to bear in his reassuring handling of clients - Legal 500 UK (2024)

Partner, Dispute Resolution
London, UK

Expertise

Mark has more than 20 years' experience of complex high value commercial litigation and cross-border fraud claims, acting for FTSE100 companies, banks, hedge funds and ultra-high net worth individuals. Mark is familiar with obtaining, executing and challenging injunctions, worldwide freezing orders and search and seizure orders. He has acted for and against parties based in the Middle East, Africa, Russia and the former CIS countries, and many of his cases have an international element.

Mark also has expertise and experience in product safety and liability cases and is listed as a Global Elite Thought Leader for Product Liability Defence in Lexology/Who's Who Legal. He has played a leadingrole in the defence of many of the significant Group Litigation Orders of the last 15 years, acting for defendants in retail, pharma, banking, automotive and public sector.

Mark is recommended in Legal 500 for Commercial Litigation, Civil Fraud and Product Liability Litigation.

Mark is known as an expert in the field of electronic disclosure and document review and the related practical and legal issues (including privilege, cross-border data protection rules and privacy regulations).

Experience

advising the Department for Business and Trade in relation to fully compensating around 1,500 sub-postmasters harmed by Post Office Horizon scandal who were either a party to the Bates v Post Office Limited Group Litigation or had their convictions overturned. As part of this role Mark has twice given evidence to the UK House of Commons Business and Trade Select Committee.
acting for Unitel SA in its Commercial Court Claims against Isabel Dos Santos, the daughter of the former president of Angola, obtaining a Worldwide Freezing Order for $580 million.([2023] EWHC 3231 (Comm)
representing over 70 Authorised Dealers in the NOX Diesel Emissions GLO brought by over 100,000 claimants in relation to BMW vehicles.
acting for GlaxoSmithKline in its successful defence of a large product liability group action in relation its antidepressant, Seroxat
advising Diageo in its Technology and Construction Court claim against a supplier of dispensing equipment
acting for Dixons Carphone plc in its dispute with McAfee which involved an interim injunction and a claim for damages in excess of $30 million

Testimonials

"Mark Chesher ... is also strong in commercial litigation within product liability" - Legal 500 2025
"[O]utstanding. ...committed to the clients they serve and produce excellent results" - Legal 500 2025.
"Mark Chesher is unrivalled for the disclosure and privacy aspects of products disputes." - Legal 500 2025
‘Mark Chesher is a stalwart of civil fraud litigation in London and brings his experience to bear in his reassuring handling of clients.’ - Legal 500 2024
"Dynamic... exceptional level of expertise, professionalism and dedication" - Legal 500 2023
"well versed in commercial and cross-border fraud litigation " - Legal 500 2023
‘The team work incredibly well together, and all members combine to go above and beyond. They have a camaraderie that makes them fantastic to work with. They are very collaborative.’ Legal 500 2022
‘All of the individuals I have worked with are all over the details and have a very high level of knowledge and skill in their areas. They are also very personable and willing to go to great lengths to get results for the clients. They are fantastic on the law, the facts, and the practical/commercial side of things.’ Legal 500 2022
"Mark Chesher is everything you could want from an instructing solicitor. Knowledgeable, sound in judgment and a great team player." Legal 500 2021
"A lawyer’s lawyer and great to work with” – Legal 500 2019
"Next generation partner" Legal 500 2019
A "Class Act"- Legal 500 2017

NEW for 2020: ICLG – Drug & Medical Device Litigation

Louisa Caswell, Mark Chesher, and Cécile Burgess, all three litigators at AG, recently contributed the England & Wales chapter to the first edition of the International Comparative Legal Guide – Drug & Medical Device Litigation.

Drawing on their extensive experience and knowledge of product liability and safety issues in the Life Sciences sector, Louisa, Mark and Cécile provide insight into litigation considerations critical to the industry in the UK, including from a regulatory and commercial perspective.

Read the article

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