Appointments to the trust are formally made by Her Majesty the Queen, with advice from the Secretary of State for Culture, Media and Sport. So we're not involved in the criteria for selecting members of the trust.
The trust then appoints the chairman of the executive board and the director general. Below them are the members of the executive board, who are appointed by the director general. It's for him to decide who he wants and what qualifications he's looking for in those appointments.