David Parratt KC (Scot) is a busy barrister, advocate and arbitrator. David has extensive court experience and regularly negotiates settlements in multi-million pounds claims. He is often involved in complex international commercial disputes.

David’s practice covers his key experience and interests in arbitration, construction & engineering claims, energy disputes (including oil/gas upstream claims), general commercial litigation and commercial contracts.

He is a practising barrister in England & Wales and was called in 2009 (Lincoln’s Inn). He is an non-practising member of the Faculty of Advocates (Scottish Bar), having practiced from 1999 to 2020 - taking Silk in Scotland in 2017. He is also a non-practising member of the Northern Irish Bar, calling in 2016.

Patrick Heneghan joined 3PB in April 2022, having previously been a dispute resolution partner in the London office of Skadden Arps, one of the world’s leading US international law firms, specialising in international arbitration, commercial litigation and other dispute resolution procedures.

Patrick has extensive experience acting as counsel in complex private commercial arbitration disputes as well as in investment treaty proceedings. Patrick has represented clients in a wide variety of different seats (including London, Hong Kong, Paris, Geneva, Stockholm and Johannesburg) and under all the major institutional and other rules (including ICC, LCIA, AAA/ICDR, SCC, HKIAC, UNCITRAL and ICSID). These disputes cover a broad range of commercial matters including shareholder agreements, minority shareholder rights, breaches of director’s duties, insurance, aviation, shipping, oil and gas, electricity generation and transmission, telecommunications, mining, finance and pharmaceuticals. Patrick also has considerable experience of engineering and construction disputes, particularly in the energy field.

Srishti is a Managing Associate at Keidan Harrison LLP, having joined the firm in January 2021. Prior to joining Keidan Harrison LLP, Srishti was an associate in the London office of LALIVE, the Swiss-based dispute resolution international law firm. Srishti has also worked in the international arbitration teams in the London offices of US firm Debevoise & Plimpton and international arbitration specialists Three Crowns. Before moving to London in 2017, Srishti was a disputes associate in the Delhi office of Trilegal, one of India’s top law firms and the New York office of Stokes Wagner, a US boutique litigation firm.

Shai heads our International Arbitration department, specialising in large-scale complex arbitration disputes in key industries such as, oil and gas, energy, natural resources, commodities, media and telecoms, construction, insurance and retail. He regularly advises on investor-state disputes.

"I sit as an arbitrator and serve as counsel in arbitrations decided under the major arbitral rules, heard in different jurisdictions and applying different substantive laws."

"I have spent my entire career in the international arbitration world.  As a young lawyer I served as a staff attorney to the Claims Resolution Tribunal for dormant accounts in Switzerland and later I drafted the arbitration rules for the appeals process of the International Commission on Holocaust Era Insurance Claims.  I am the co-author of the principal textbook commentary on LCIA Arbitration, and I am honoured to have been recognised as a leading international arbitration lawyer by my colleagues and by the best known legal directories.

I sit as an arbitrator and serve as counsel in arbitrations decided under the major arbitral rules, many different laws in jurisdictions across the globe

Clients trust me with repeated instructions because they know that I am an excellent strategist who will work tirelessly for them, to secure the best possible outcome."

‘Shai Wade is a superstar! A brilliant lawyer with exceptional knowledge and understanding of international arbitration in various industries.’- Legal500 2025