The Big Four’s FTSE 100 Audit Portfolios by Sector

Number of audit appointments held by Deloitte, PwC, EY and KPMG across FTSE 100 sectors, September 2026.

Based on FTSE 100 constituents effective 21 September 2026. Shows 96 Big Four audit appointments; excludes four appointments audited by challenger firms. Each company is counted once. Figures represent appointments, not audit fees.
Chart: Big4NewsSource: Big4News research