Since 1998, Charles and his business partner Manoj Badale have built more than 30 businesses, largely technology-related, managed through their investment company Blenheim Chalcot. The portfolio currently consists of over 20 companies in multiple sectors, with group assets under management of £900m. Charles is also the Chairman of Tech Trust, Onside Youthzones London, and Barking and Dagenham Youthzone. He is a trustee of The Royal Foundation of the Duke and Duchess of Cambridge.