About our business in Switzerland
Switzerland is a strategic jurisdiction for managing complex international structures, supported by a stable, well-regulated environment and exceptional financial expertise.
Globally recognised as a leading centre for private wealth management, it offers a secure platform for international trust administration, with Swiss-based trustees able to manage structures governed by a wide range of jurisdictions.
Our Swiss business, Summit Trust International SA, has been serving clients since 1999 and became part of the Group in 2021.

Summit Trust International SA
6 Place des Eaux-VivesGeneva 1207
Switzerland
Meet the Switzerland Leadership team

Alona Golling
Head of Client Services

Christian Long
Senior Trust Officer

Clare Usher-Wilson
Head of Family Office

Daniel Martineau
Summit Trust Non Executive Chairman

Emma Cussen
Senior Trust Officer

Gill Ferguson
Summit Trust Chief Compliance Officer

Joanne Morse
Summit Trust Deputy CEO

Oliver Eaborn
Senior Trust Administrator

Sandra Nanni
Summit Trust CFO

Stella Mitchell-Voisin
Summit Trust International Chief Executive Officer
Our International Presence
Proudly serving the interests of our clients in over 30 countries, we have dedicated teams in key jurisdictions.
Together, these jurisdictions offer a powerful combination of regulatory clarity, global reach, and bespoke fiduciary and funds expertise – helping clients navigate complex, multi-jurisdictional financial landscapes.
We have offices in Jersey, Guernsey, Switzerland, United Arab Emirates, the United Kingdom and the Cayman Islands and have plans for further expansion into additional jurisdictions.

Jersey

Guernsey

Switzerland

United Arab Emirates

United Kingdom
