It is a wholly independent company, owned and managed by its principal directors.

Since 1875 various members of the Hoare family had been principal directors and maintained a controlling interest in the company.

The principal director of the school is Antonio Pino.

Later in the 1950's, he was principal director of the economic affairs department at the United Nations.

She was the principal director of the Land Reform Commission.

Injunctions were also obtained against, its principal director who appears to have offices in South Africa.

The network's principal directors and other officers are appointed by the State.

She is principal and creative director of Breathewords.com.

Writers from the show will discuss its making, among them John Bowab, a principal director.

From 1972 to 1981 he was principal director at the Hamburg State Opera.