EY-Parthenon Expands Private Equity Practice with Three New Partners

EY-Parthenon Expands Private Equity Practice with Three New Partners

By USFM•November 26, 2025

EY-Parthenon has bolstered its private equity practice in the UK by appointing Clare Harris, Chris Robinson, and Patricia Martin del Castillo as partners. The strategic hires are aimed at enhancing procurement capabilities and financial diligence services for private equity clients.

In a significant move to strengthen its private equity practice, EY-Parthenon has announced the appointment of three new partners: Clare Harris, Chris Robinson, and Patricia Martin del Castillo. This strategic expansion is designed to enhance the firm's offerings and reinforce its commitment to delivering value to private equity clients.

Clare Harris, formerly the global Chief Operating Officer at Proxima, a part of Bain & Company, will spearhead a new initiative aimed at expanding EY-Parthenon’s procurement services specifically tailored for private equity clients. Her focus will be on developing procurement capabilities that assist portfolio companies in reducing costs, a critical area for improving operational efficiencies and driving value creation.

Chris Robinson joins EY-Parthenon from private equity firm Apax, bringing with him 15 years of investment experience. He will contribute to the firm's Financial Diligence practice, which is essential in evaluating potential investments and conducting robust financial assessments to support private equity clients across various sectors.

Patricia Martin del Castillo also joins the Financial Diligence team, leveraging her extensive 13-year background in international transactions. With a wealth of experience in advising large pharmaceutical companies and private equity firms on both buy-side and sell-side transactions, she is expected to enhance EY-Parthenon’s capabilities in sectors such as pharma, biopharma, plasma, radiopharmaceuticals, medtech, and public-to-private deals.

The strategic rationale behind these appointments is clear: EY-Parthenon aims to deepen its expertise in key sectors relevant to private equity, positioning itself as a leader in providing comprehensive financial and operational support to its clients. By enhancing its procurement and diligence services, the firm is set to drive greater value for its clients and improve outcomes for their investments.

As for the timeline, while the specific effective date of these appointments has not been disclosed, the firm is expected to begin integrating these partners into its operations immediately. The market impact of this move could be significant, as enhanced capabilities may attract more private equity clients seeking in-depth financial analysis and strategic support.

In terms of regulatory considerations, no immediate antitrust or regulatory approvals are required for these internal appointments, as they fall within the firm’s operational expansion rather than a merger or acquisition.

Overall, this strategic enlargement of EY-Parthenon’s private equity practice signals the firm’s commitment to enhancing its service offerings in a competitive landscape, ultimately benefiting shareholders and positioning the firm for future growth.