Mr Saadaoui’s brother Bilel Saadaoui, 35, pleaded not guilty to failing to disclose information about acts of terrorism during the hearing at the Old Bailey.
A trial has been scheduled to take place at Preston Crown Court from 7 October next year.
Walid Saadaoui, of Crankwood Road, Abram, Bilel Saadaoui, of Fairclough Street, Hindley, and Mr Hussein, of no fixed abode, spoke to confirm their identities during the hearing.
Mrs Justice Cheema-Grubb set a further preparatory hearing at the Old Bailey on 14 March.
