William Upton

Lesley Hannah is a lawyer recognized by Best Lawyers in the practice area of Competition Law. Lesley practices law in London, United Kingdom Best Lawyers has recognized Lesley Hannah since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Lesley Hannah is held by other lawyers.

Michelle M. Kirschner is a lawyer recognized by Best Lawyers in the practice area of Financial Services. Michelle M. practices law in London, United Kingdom Best Lawyers has recognized Michelle M. Kirschner since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Michelle M. Kirschner is held by other lawyers.

Zaneta Wykowska is a lawyer recognized by Best Lawyers in the practice area of Securitisation Law. Zaneta practices law in London, United Kingdom Best Lawyers has recognized Zaneta Wykowska since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Zaneta Wykowska is held by other lawyers.

Kalyan "Kal" Das is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law. Kalyan, who practices law in New York, New York, has been recognized since 2027. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kalyan is held by other top lawyers in the same geographic and legal practice area. Kal Das focuses on global bank and institutional finance, structured finance, project finance, asset securitization, di...

Rob Day is a partner in Proskauer’s Corporate Department and a member of our Private Equity Transactions, Mergers & Acquisitions and Sports Groups. Rob’s practice focuses on public and private M&A, leveraged buyouts and joint ventures, private equity and portfolio company transactions. His clients include global corporations, asset managers and private equity houses, advising on their strategically important transactions across financial services, consumer, sports, media a...

Aymen Mahmoud is the co-head of the London Finance, Restructuring and Special Situations Group. He focuses his practice on complex debt financing transactions for private equity funds and their portfolio companies, hedge funds, corporate borrowers and issuers and other financial institutions including banks, direct lenders, family offices and other alternative sophisticated capital. His experience includes acting in respect of direct lending, leveraged buyouts, domestic and cross-border syndi...

Helen Croke joined Ropes & Gray as a partner in its private equity transactions group in October 2016. She specialises in UK and international private equity and M&A, including acting for institutional investors, corporates and founders. Helen is recommended by Chambers UK and The Legal 500 as a leading individual in private equity who clients say is “fantastic” with a “unique ability to articulate complicated aspects in layman’s terms.” Helen was recogni...

Joel D. Harrison is a lawyer recognized by Best Lawyers in the practice areas of Information Technology Law and Outsourcing. Joel D. practices law in London, United Kingdom Best Lawyers has recognized Joel D. Harrison since 2022. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Joel D. Harrison is held by other lawyers.

Gary Born is the chair of the International Arbitration Practice Group. Mr. Born is widely regarded as the world's preeminent authority on international commercial arbitration and international litigation. He has been ranked for more than 20 years as one of the world's leading international arbitration advocates and the leading arbitration practitioner in London.

Justin Watts is an experienced patent litigator who has an established and well-regarded intellectual property practice. Clients rely on his industry knowledge and years of experience to handle their complex, multinational disputes. Dr. Watts represents a variety of clients, with an emphasis on those in the pharmaceutical, medical devices, biotechnology, communications, and hardware and software industries, in disputes involving standards, competition law and patents. Dr. Watts' experience en...