Westwick Melrose & Cromwell
Legacy isn’t inherited. It’s stewarded.
Advisory, governance, and transition support for families.
Our Story
Gilles Erulin funded Westwick Melrose & Cromwell in 2013 after working with the Pinault family office, Financière Pinault Artemis, from its inception for more than 26 years, addressing some of the family’s most complex challenges: acquiring sophisticated assets, turning around subsidiaries, sorting challenging or critical issues, and ultimately going with the family through a generational transition. Throughout this period, he helped ensure that the family’s vision, values, and uncompromising standard of execution endured.
Through decades of experience, and close work with other families, Gilles saw a consistent gap: families need discreet, trusted, and action-oriented advisors who can step in and actually get things done when issues fall outside the day-to-day or the SFO capacity.
Westwick Melrose & Cromwell was created to bridge the gap between advice and action, empowering families to navigate complexity, execute with confidence, and retain control of what matters most.
Meet the team
Gilles has assembled a team of curated experts, each selected for their unparalleled track records in family governance, private assets, and intergenerational wealth.
Our team doesn’t just advise—we act. With backgrounds in family trusts, banking, law, investment, we bring hands-on expertise to every challenge, ensuring that families’ visions are not just heard, but implemented with precision and care.
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Gilles Erulin
FOUNDER
Having worked for over 30 years for various Families, Gilles is a veteran and one of the most respected voices in the Family Office industry. He is an expert in family office steering and family governance. -
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Isabelle Irani
PARTNER
With a background serving the Mittal Family, Isabelle is an expert in private assets and impact investing. She helps Families make the right choices to accomplish long term objectives. -
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Andy Wadley
PARTNER
As the founder of a regulated UK Pension fund trustee firm, Andy is an expert in trustee board and trust governance, providing families with the strategic guidance needed to build robust structures and maintain control. -
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John Saunders
PARTNER
A senior banker and qualified solicitor, John specialises in the commercial and regulatory evolution of wealth management. He is an expert in governance and business transformation, advising families on complex acquisitions and the structural alignment of their financial interests. -
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Aymeric Erulin
PARTNER & HEAD OF OPERATIONS
Aymeric supports Next-Gens in gaining knowledge and confidence to take an active role in their family office. He is also in charge of running and developing WMC.
Where we support Families
WMC was born to bridge the gap between advice and action, offering unmatched operational support and strategic clarity during the most pivotal moments for families and their legacies.
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We support families in transitioning wealth across generations while preserving unity, values and vision.
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Structuring governance frameworks that reflect the family’s ethos and adapt to change.
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We help the family understand and position itself vis a vis their own increasingly sophisticated Family Office and establish themselves at the right distance to retain control while ensuring alignment and comfortable efficiency.
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Managing complex or challenging assets or situations with hands-on operational expertise and strategic oversight.
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We provide interim CEO for family offices on short notice, or as part of a generational turnaround of the SFO.