The National Health Service Trusts (Membership and Procedure) Regulations 1990

Persons to be regarded as executive directors

5.  A person who is not an employee of an NHS trust but–

(a)holds a post in a university with a medical or dental school, and also works for the trust; or

(b)is seconded from his employers to work for the trust,

is nevertheless, on appointment as a director, to be regarded as an executive rather than a non-executive director of the trust.