Leigh Crestohl > Zaiwalla & Co > London, England > Lawyer Profile

Zaiwalla & Co
Holborn Tower
137-144 High Holborn




Leigh has 20 years of experience advising clients across a broad range of commercial disputes including: contact claims; shareholder remedies and joint venture agreements; property disputes; international sales and distribution agreements; construction and engineering; intellectual property and banking and financial regulatory matters. He practiced for several years with Ogilvy Renault (now Norton Rose Fulbright Canada), followed by seven years in the Paris and London offices of international law firm Clifford Chance. He is qualified as an English solicitor and admitted as a lawyer in Quebec and Ontario.

In addition to international and cross-border disputes, Leigh’s practice also includes a focus on the international commercial arbitration and investment disputes. He represents client in proceedings before the arbitration tribunals constituted either ad hoc or under the auspices of arbitration institutions. He is a member of the London Court of International Arbitration (LCIA; Chartered Institute of Arbitrators and he is on the panel of arbitrators of the ICC Canada National Committee.


  • English
  • French (fluent)
  • Polish (intermediate)


  • London Court of International Arbitration
  • Chartered Institute of Arbitrators
  • Barreau du Quebec
  • Law Society of Upper Canada


  • B.A. Joint Hons. (McGill, Canada, 1990)
  • B.C.L (McGill, Canada, 1994)
  • LL.B (McGill, Canada, 1994)

Lawyer Rankings

London > Dispute resolution > International arbitration

Zaiwalla & Co undertakes high-stakes international arbitration work that frequently emanates from India, Russia and the Middle East; and it is increasingly sought out by Iranian companies. Sarosh Zaiwalla is ‘one of the market’s top disputes solicitors‘, while Leigh Crestohl acts in construction, media, telecoms, finance, and oil and gas-related matters.

London > Dispute resolution > Commercial litigation: mid-market

Able to conduct complex, multi-party, multi-jurisdictional claims involving billions of pounds‘, Zaiwalla & Co undertakes high-stakes, multi-jurisdictional commercial litigation work that emanates from India, Russia, South America, and across the Middle East. Name partner Sarosh Zaiwalla, who ‘has many years of experience in complex litigation‘, is an expert in challenging international sanctions, while Leigh Crestohl covers a broad range of commercial disputes. The youngest partner at the firm, Kartik Mittal routinely acts in high-value banking litigation involving developing or high-growth economies.

London > Dispute resolution > Banking litigation: investment and retail

Boutique firm Zaiwalla & Co has ‘excellent experience in complex international banking disputes‘, acting regularly for and against major state banks. Team head Sarosh Zaiwalla has over 40 years of experience in multi-jurisdictional banking litigation, with particular expertise in international sanctions-related matters. ‘Expert lawyer’ Leigh Crestohl and ‘standout partnerKartik Mittal are also noted.