Charles worked a journalist after studying Dutch literature at the University of Amsterdam. As a parliamentary reporter and correspondent, he worked for De Telegraaf and the national TV news by NOS. In 1992, he started what is now HSC. Charles built up a name as a (financial) communication expert in difficult situations. Advice on mergers and acquisitions became a specialism. He was the spokesperson for the Amsterdam Stock Exchange, for the Supervisory Board of Ahold (after the accounting scandal), for the Dutch Corporate Governance Committee and for the trustees of DSB Bank after the bankruptcy.
Charles is a reading fanatic and enjoys writing columns and articles. He is also regularly interviewed as a media expert, especially on crisis communication. With some colleagues, he wrote handbooks such as 'Surviving in Times of Crisis' and 'The New Media Handbook'. He is a member of the Advisory Board of Atria, the knowledge institute for emancipation and women's history.