Accordia Group didn’t start as an idea for a new brand. It was built on a clear strategy and thesis: Thompson Street Capital Partners investing in specialized ADR firms that had already proven themselves in their own markets – National Arbitration & Mediation, ADR Support, Salmon & Dulberg Dispute Resolution, Alvarez Dispute Resolution.

Each investment was made on the same principle: find firms that are already excellent – because of the expert-led neutral services they provide, the strength of their case administration and scheduling, their deep local reputation and client relationships, and the continuity of leadership that built that reputation in the first place – and then give them more investment and strategic room to grow, trusting in the ways of operating that had served each so well to date.

That thesis works because of something specific to the ADR industry. ADR is fundamentally relationship-driven – clients choose mediation because they trust the strength of the neutral’s expertise, understanding of the law, and commitment to provide time- and cost-efficient, fair outcomes.

So Accordia Group is built around a different mechanic: firms keep their identity, their leadership, and their client relationships, and the platform provides what no single firm could build efficiently on its own – shared case administration infrastructure, technology investment, marketing support, and a forum for firm leaders to share what’s working across markets.

All of it is aimed at the parts of running an ADR firm that sit outside the actual practice of dispute resolution – the overhead that keeps good firms from growing faster. How a firm runs its cases and manages its panel stays exactly where it belongs: with the firm.

Backed by Thompson Street Capital Partners, Accordia Group formalizes that pattern into a platform with the capital and infrastructure to keep it going. The thesis is straightforward: national reach and local expertise aren’t in tension, and firms that already meet a high bar for depth shouldn’t have to choose between staying independent and getting access to platform-level resources.

“The approach to building Accordia Group mirrors historical TSCP portfolio successes. Namely, we’ve identified and brought together the best operators in a fragmented industry, building a platform from their shared capabilities and infrastructure. Accordia Group brings together best-in-breed ADR firms the same way – each one still leading, now with more room to grow,” said Clayton Milburn, Managing Director at Thompson Street Capital Partners.

That’s the pattern behind every Accordia Group investment so far, and it’s the same pattern behind what comes next – more firms, in more markets, each one keeping what made it trusted while gaining what only a larger platform can offer.