Thomas was appointed CEO of Saatchi & Saatchi Copenhagen in 2005. Since then, the agency has enjoyed year-on-year double-digit growth and become one of the most profitable agencies in the country.

Managing Director of Wunderman. Business Development Director of Young & Rubicam. Client Service Director of Advance. Account Manager of both Kunde & Co. and Rapp Collins. Thomas' curriculum was already comprehensive when he started at Saatchi & Saatchi and, as his first act, he introduced the strategic approach, "The Media Neutral Agency", forcing all employees to think about integrated communication when presenting solutions to clients. The results were tremendous:
Saatchi & Saatchi became Agency of the Year 2007 and Digital Agency of the Year 2008, attracting new clients such as Dyrup, Sony Ericsson, Peugeot, Fanta, Burn and Kildevæld/Bonaqua. Recent wins, PANDORA and Berlingske prove the agency's success has not lost any of its momentum.