Mr Mark Chennells QC > Atkin Chambers > London, England > Lawyer Profile

Atkin Chambers
Atkin Chambers
1, Atkin Building, Gray's Inn


Mark has broad experience of acting both as sole counsel retained in proceedings and as junior counsel in very large commercially, legally and technically complex disputes with expertise in domestic and international arbitration, TCC and Commercial Court litigation, adjudication and mediation.

He specialises mainly in construction and engineering, professional negligence, IT and telecommunications, and energy disputes representing governments, a wide range of contractors, private employers and their professional advisors all over the world. He also has experience of issues of private international law, including the jurisdiction of the English and foreign courts and the determination of applicable law.


Qualified 2002; Gray’s Inn.


Mark is a member of COMBAR, TECBAR and the SCL.

Lawyer Rankings

London Bar > Energy

(2021 Silks) Ranked: Tier

Mark Chennells QCAtkin ChambersHe gets to the heart of the issues very quickly and never hesitates to plummet into the details of a case.

Atkin Chambers is ‘the unrivalled top-end construction set in the UK‘ and has ‘an impressive range of skills and experience for construction, energy, and infrastructure‘. Its members frequently act for many of the world’s energy majors in matters relating to large-scale energy projects and involving complex technical issues. Clients praise standout performers including head of chambers Chantal-Aimée Doerries QCNicholas Dennys QC, and Andrew White QC, whose work includes disputes arising from gas-related power plant and extraction projects in Africa. Rupert Choat, who handled a TCC litigation between client Equitix and its O&M contractor concerning a biomass plant in Sheffield, and Mark Chennells are among the set’s outstanding juniors both in court and in international arbitration. ‘The clerks are accessible and a pleasure to deal with, going above and beyond in providing patient help and assistance in complicated cases‘, remarks one client.

London Bar > IT and telecoms

(2021 Silks) Ranked: Tier

Mark Chennells QCAtkin ChambersHe offers considered analysis and instils confidence into his clients.

London Bar > International arbitration: counsel

(2021 Silks) Ranked: Tier

Mark Chennells QCAtkin ChambersSharp, yet has a straightforward approach with the ability to make the most complex contractual issue simple to understand.

London Bar > Construction

(2021 Silks) Ranked: Tier

Mark Chennells QCAtkin ChambersVery astute, thorough, incisive and experienced. His preparation is impeccable and he zeroes in on the key issues.

Asia Pacific - The English Bar > Construction, energy and infrastructure

(2021 Silks) Ranked: Tier 1

Mark Chennells QCAtkin ChambersGreat cross-examination skills, provides a calm and thorough approach.