Mind the Gap (in Review Standards): England vs Switzerland as Seats for Investment Treaty Arbitration

On 14 May 2026, the Swiss Arbitration Association and WilmerHale will host an evening event at WilmerHale’s London offices, convening leading arbitration practitioners from the UK and Switzerland. It will take place from 17:30 to 19:00 (UK time),

Titled “Mind the Gap (in Review Standards): England vs Switzerland as Seats for Investment Treaty Arbitration”, the discussion will examine the comparative advantages of England and Switzerland as seats for non-ICSID investor-state arbitration. Particular focus will be placed on how courts in each jurisdiction approach the review and potential annulment of investment treaty awards, and what this means in practice for parties selecting a seat.

The event will open with remarks from Michele Potestà, followed by a keynote address from Dame Elizabeth Gloster,  offering an introduction to the topic and an overview of what matters when considering a seat for investor state arbitration proceedings.

A panel discussion will then bring together distinguished practitioners: Salim Moollan KC and Cameron Miles will present the UK perspective, while Hanno Wehland and Anya George will provide the Swiss viewpoint. The session will be moderated by Nadja Al Kanawati.

The programme will be followed by drinks and canapés, offering attendees the opportunity to continue discussions and network with peers in the arbitration community.