Dyson appoints sons as business directors Sam and Jacob - known as Jake - Dyson have both joined the board of their father's holding company, Dyson James Group, as non-executive directors. The appointments have been filed at Companies House over the past 10 days. The board is led by Sir James, above, best known for his bagless vacuum cleaner, with other members of the Dyson senior management team. The business is run day-to-day by chief executive Max Conze, who took the top job last year after running its US operations for 18 months. But Sir James's sons - who both run businesses in their own right - are the only family members, other than the founder himself, on the board. The company is owned by Sir James and his family, and it is understood that his sons - design engineer Jake is 40, while musician Sam is 35 - have attended quarterly shareholder meetings. A Dyson spokesman confirmed the appointments.