No amendment or variation. This Agreement may not be released, discharged, supplemented, interpreted, amended, varied or modified in any manner except by an instrument in writing signed by a duly authorised officer or representative of each of the Parties to this Agreement.
No amendment or variation. This Agreement may not be altered or modified except by writing signed by the parties hereto.
No amendment or variation. This Agreement cannot be varied, added to or cancelled otherwise than by means of a further written agreement between the Parties.
