In its decision the tribunal made five principal determinations: a unanimous rejection of the United Kingdom's argument that the tribunal lacked jurisdiction; a unanimous rejection of the United Kingdom's argument that Ireland's claim was inadmissible; a two to one majority rejection of the United Kingdom's argument that Ireland had no right to sue at an international tribunal; a two to one majority rejection of Ireland's argument that the particular information which had been requested was covered by the scope of the OSPAR Convention; and a unanimous decision that each side should pay its own costs.