Big Four Vets Launch $300M PE-Backed, AI-Powered CFO Advisory Firm

Born for scale, built to sell, and run like a tech company.

Unity Advisory: Ex-PwC UK Managing Partner Marissa Thomas and former EY UK Chair Steve Varley.

By CPA Trendlines Research

A new $300 million entrant is challenging the Big Four’s lock on Fortune 500 advisory—and it may be the next big thing.

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Unity Advisory, a London-based firm launched by former EY UK chair Steve Varley and ex-PwC UK managing partner Marissa Thomas, is taking direct aim at the CFO suite with a venture capital mindset, AI at its core, and no legacy constraints.