Article 4U.K.Offences relating to a terrorist group
Member States shall take the necessary measures to ensure that the following acts, when committed intentionally, are punishable as a criminal offence:
(a)
directing a terrorist group;
(b)
participating in the activities of a terrorist group, including by supplying information or material resources, or by funding its activities in any way, with knowledge of the fact that such participation will contribute to the criminal activities of the terrorist group.