Skip to content

Sunil Mawkin



Mawkin Sunil
Sunil Mawkin



Sunil has extensive experience in managing high value commercial arbitrations under the ICC, LCIA and SIAC Rules in both common and civil jurisdictions, including England, Australia, Singapore, Indonesia, Hong Kong, India and the Philippines.

Sunil has particular experience advising clients in the energy, construction and infrastructure sectors as well as handling large scale M&A, banking and competition related disputes.

Sunil has been recognised as a “Rising Star” in International Arbitration by Legal 500 in both in 2020 and 2021 rankings.

Other noteworthy experience includes advising:

  • A major Indonesian gold mining company in respect of a USD 100M LCIA, London seated arbitration concerning warranty claims under an SPA.
  • A world leading electronics company in defending a USD 800m FIA, Helsinki seated arbitration concerning alleged price fixing.
  • A major plant operator (as employer) in respect of claims brought by the EPC Contractor arising out of COVID-19 in relation to the construction of a biomass plant.
  • A major pipeline company (as employer) in respect of various claims brought by contractors under several EPC contracts for extensions of time and additional costs.

Experience highlights



Allen & Overy LLP
One Bishops Square
E1 6AD

View office →



Admitted as solicitor, England and Wales, 2012


Legal Practice Course, The College of London, 2010

LLB, Law with American Law, Nottingham University, 2009

Published work

Commentary Article on TMM Division Maritima v Pacific Richfield Marine [2013] SGHC 186 - Mealey's International Arbitration Report, October 2013

Commentary Article on Quarella SpA v Scelta Marble Australia [2012] SGHC 166 - Mealey's International Arbitration Report, December 2012

One step forward, two steps back - Concurrent delay in England post City Inn, Civil Engineering Surveyor, November 2011

The final piece in the puzzle? West Tankers revisited, Mealey's International Arbitration Report, May 2011

News & insights

Collection of lights

Publications: 30 NOVEMBER 2021

The sun never sets on English law governed debt: reviewing the Re Prosafe SE decision

The recent decision in Re Prosafe SE pits the principle of freedom of contract against the increasingly popular modified universalism in the cross-border restructuring and insolvency space.

Read more
Glass building

News: 29 NOVEMBER 2021

Allen & Overy advises Ørsted in purchase of 302 MW onshore wind farm

Allen & Overy advised Ørsted in the acquisition of Lincoln Land Wind, a 302 MW onshore wind farm in Morgan County, Illinois, from Ares Management. This transaction also includes the acquisitions of…

Read more
sky reflecting on a glass high rise building

News: 06 OCTOBER 2021

International Arbitration and Public International Law practices maintain strong performance in Legal 500 UK

Allen & Overy has maintained its tier one ranking in Public International Law (PIL) and a leading ranking for International Arbitration in The Legal 500 (Legalease) UK 2022 rankings. All of the…

Read more
Panoramic view of London's skyline

Publications: 22 SEPTEMBER 2020

LCIA introduces new arbitration rules to improve efficiency and effectiveness

The London Court of International Arbitration (the LCIA) has published its new arbitration rules (the 2020 Rules) which will apply to arbitrations commenced from 1 October 2020. This is precisely six…

Read more