15. Incitement, promotion or solicitation of property for the commission of terrorist acts
Any person who, knowingly—
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(a) incites or promotes the commission of a terrorist act;
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(b) incites or promotes membership in a terrorist group; or
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(c) solicits property for the benefit of a terrorist group or for the commission of a terrorist act,
commits an offence and is, on conviction on indictment, liable to imprisonment for a term of 15 years.