Article 19 Evidence
In any proceedings on an appeal, the evidence of witnesses may be given either—
orally, before the Commission, or
in writing, in which case it shall be given in such a manner and at such time as the Commission has directed.
The Commission may also receive evidence in documentary or any other form.
The Commission may receive evidence that would not be admissible in a court of law.
No person shall be compelled to give evidence or produce a document which he could not be compelled to give or produce on the trial of an action in the part of the United Kingdom in which the proceedings before the Commission are taking place.
Every party shall be entitled to adduce evidence and to cross-examine witnesses during any part of the hearing of the appeal from which he and his representative are not excluded.
The Commission may require a witness to give evidence on oath.