Hailed as one of the wealthiest people in the globe today, David Thomson is a media magnate with an estimated net worth of $27 billion in January 2018.

His father is Kenneth Thomson is considered as the 2nd Baron Thomson of Fleet, which makes him the 3rd Baron Thomson of Fleet. When his father died in 1976, he immediately took over as Chairman of the Board of Thomson Corporation. When Thomson Corporation acquired Reuters in 2008, he instantly became the Chairman of Thomson Reuters. As of the moment, his family owns 55% of the merging entity.

Together with his brother Peter, David Thomson is part of Woodbridge, a private holding company which owns Thomson Reuters, and owns shares and stakes at IHS and Strategic Hotels and Resorts.

With his $23 billion net worth in 2010, David Thomson and his family was considered as the wealthiest family in Canada. He and his family is known to own a diverse collection of Pablo Picasso and John Constable masterpieces.