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Sonia Bourgaize

Operations Director

Trust and Corporate

Guernsey

Sonia Bourgaize

Sonia is Operations Director of Collas Crill Trust Guernsey and Jersey.

After five and a half years as the Managing Director of Collas Crill Trust Guernsey, Sonia also brings extensive knowledge in trust operations to the role.

She is an Associate of the Institute of Chartered Secretaries and Administrators, holds the Institute of Directors (IoD) Diploma in Company Direction and is a member of the IoD.

Sonia joined Collas Crill Trust in January 2018 from an independent trust company in Guernsey where she had served on the Board for 10 years. She has a wealth of experience in the local fiduciary sector dealing with ultra-high-net-worth private clients.

During her career Sonia has looked after large, complex structures which have spanned multiple jurisdictions for multi-generational families. She has specialised in structures for entrepreneurial clients and has expertise in private equity, corporate governance and the management of non-traditional assets.

Expertise

At Collas Crill Trust, we combine the personal and responsive service you’d expect from a boutique with the expertise and reach that a global firm provides.

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News and insights

Roles reflect growth of Collas Crill's trust and corporate services business

In response to the significant growth and development of its trust and corporate services businesses, Collas Crill has made a number of changes to its sen...

Life and careers 10/02/2026
  • Jersey
  • Guernsey
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How Guernsey’s private trustee structures can protect assets

Greta Pender contributed to an article in Spear's magazine, in association with Guernsey Finance. In the article she, along with Rupert Pleasant, Chief Ex...

Insight 03/04/2025
  • Guernsey
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The proposed inequality tax: A critical analysis

In recent years, income inequality has become an increasingly pressing issue. The gap between the wealthiest individuals and the rest of the world's popul...

Insight 17/07/2023
  • Guernsey
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Collectible cars: Investment or lifestyle asset?

Investing in cars has long been a passion for automotive enthusiasts. While many people enjoy classic cars for their timeless beauty and historical signif...

Insight 10/07/2023
  • Guernsey
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Virtual asset succession

What is the state of current cryptocurrency regulation and what are the implications for families who hold cryptocurrencies as part of their wealth? Virtu...

Insight 23/06/2023
  • Guernsey
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Comply or complain?

Let's be honest, there are not many people who enjoy giving out their personal information, let alone the piles of paperwork they have to complete every t...

Insight 19/06/2023
  • Guernsey
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The strategic role of trusts in estate planning and financial planning

There are many variables at play in wealth preservation planning and, with more options and information available in the digital age, it can feel harder t...

Insight 14/06/2023
  • Guernsey
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