(1)A person who aids, abets, counsels or procures, or incites, a person who is not a United Kingdom person to do a relevant act outside the United Kingdom is guilty of an offence.
(2)For this purpose a relevant act is an act that, if done by a United Kingdom person, would contravene any of the following provisions—
(a)section 1 of the Biological Weapons Act 1974 (offences relating to biological agents and toxins);
(b)section 2 of the Chemical Weapons Act 1996 (offences relating to chemical weapons); or
(c)section 47 above (offences relating to nuclear weapons).
(3)Nothing in this section applies to an act mentioned in subsection (1) which—
(a)relates to a relevant act which would contravene section 47; and
(b)is authorised by the Secretary of State;
and section 48(2) applies for the purpose of authorising acts that would otherwise constitute an offence under this section.
(4)A person accused of an offence under this section in relation to a relevant act which would contravene a provision mentioned in subsection (2) may raise any defence which would be open to a person accused of the corresponding offence ancillary to an offence under that provision.
(5)A person convicted of an offence under this section is liable on conviction on indictment to imprisonment for life.
(6)This section applies to acts done outside the United Kingdom, but only if they are done by a United Kingdom person.
(7)Nothing in this section prejudices any criminal liability existing apart from this section.