Membership of the Board of Trustees is between twelve and sixteen persons.  The Trustees are the directors of the company.  They have overall responsibility for the Foundation and are guardians of the Foundation's ethos.

The Trustees meet on a termly basis and have an Annual General Meeting in December.

Trustees are appointed for an initial term of three years and are eligible for re-appointment. The maximum term for a Trustee (with the exception of the Chair of Trustees) is nine years.