“The flexibility MML offers is ideal, allowing us to focus on managing our day-to-day business operations and continuing to act as an independent adviser, both of which are paramount to continuing to provide high-quality services to our clients.”

Simon Platt and Christopher Martinez, Co-Founders, StoneTurn


Transition governance framework and fund both transatlantic growth and service line extensions.

The business

Market-leading provider of forensic accounting and monitorship services in highly complex, multi-jurisdictional investigations and engagements.

The deal

Before meeting MML, Simon, Christopher and the partner group had already developed the framework of a clear growth plan to enhance and expand the business’ service line capabilities in both the US and internationally, but the team also recognised a need for a supportive capital partner to help execute on the plan. MML spent significant time alongside the management team before investing, allowing us to understand the needs and objectives of all stakeholders at hand before we crafted a bespoke structure. MML invested into a minority equity stake alongside the StoneTurn partner group, and the investment has acted as a real catalyst to accelerate growth in value: providing an incentive to invest for growth through geographical expansion, M&A, and the addition of new talent.

Partnership Capital
Deal Status
Business Services

Catchup with Co-Founders, Simon Platt and Christopher Martinez, 18 months post-investment.

Can you tell us what motivated you to found StoneTurn?

We knew we could create a firm that would focus on our people first and foremost and provide the opportunity and encouragement for the personal and professional growth of each of us, together, as a cohesive group.

How has the firm’s culture underpinned StoneTurn’s business success to date?

Culture is the bedrock of our business and has underpinned our success to date. We operate with a “people first” business model, reflecting the understanding that people are the firm’s greatest assets and the firm’s success hinges on the long-term professional satisfaction and contribution of its professionals. We measure success by balancing the needs of our clients and our people, recognising and rewarding hard work and commitment to the consistent practice of the firm’s cultural values, and providing the resources and flexible management structure that enable our professionals to maintain an optimal work-life balance.

How does StoneTurn view its international presence in the context of its positioning in the market?

Our clients are global, so it’s critical that we are too. Our global presence has been paramount in our ability to win and service the largest, most complex engagements across our key disciplines, and in locations across the world.

Related news

MML partners with global advisory firm, StoneTurn
MML Capital Partners is pleased to announce that it has made a significant minority investment in StoneTurn (www.stoneturn.com), a leading global advisory firm. The strategic partnership with MML will facilitate StoneTurn’s expansion into new geographies and practice areas, and will allow the firm to continue to attract top-tier talent and provide best-in-class services to its valued clients.

Associated deal team

Ian Wallis

Europe / US

Sean Quinn

Managing Director

William Stewart

Investment Director

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For investors in MML Fund VI, MML Ireland I & MML Ireland II

For investors in MML Fund VII