The lawyer of a dual British-Australian national indicted in a botched attempt to kidnap two Australian-Lebanese children at the center of a custody battle says he has objected to a travel ban imposed on his client.

Joe Karam said on Friday that judges issued the ban against Adam Whittington but that he appealed the decision. A verdict is expected on Saturday.

Whittington, who heads a British-based child recovery agency, allegedly masterminded the plot to kidnap the children from their Lebanese father in Beirut in April.

Whittington, his colleague and the children's Australian mother, Sally Faulkner, were charged with forceful kidnapping, which is punishable in Lebanon by up to 15 years imprisonment.

Faulkner and an Australian TV crew posted bail in April and have since returned to Australia.