Daniel Křetínský, known as the "Czech sphinx," is on the verge of acquiring Royal Mail's parent company, with key decisions on his investment strategy expected this year.
Carolyn McCall, ITV chief executive, is tasked with improving share prices despite a decline, focusing on digital platform success and advertising challenges.
The FCA's Nikhil Rathi faces major issues, including a looming car finance scandal and pressure to attract new listings to the London Stock Exchange.
Margherita Della Valle, Vodafone's CEO, works on handling declining revenues and a significant merger while managing service improvements amidst competition.
Christine Lagarde leads the ECB amid a fragmented eurozone economy, working to stabilize policies during a politically turbulent year ahead.