6Ancillary offences
(1)Without prejudice to section 92 of the [1982 c. 16.] Civil Aviation Act 1982 (application of criminal law to aircraft) or to section 2(1)(b) of this Act, where a person (of whatever nationality) does on board any aircraft (wherever registered) and while outside the United Kingdom any act which, if done in the United Kingdom would constitute the offence of murder, attempted murder, manslaughter, culpable homicide or assault or an offence under section 18, 20, 21, 22, 23, 28 or 29 of the [1861 c. 100.] Offences against the Person Act 1861 or section 2 of the [1883 c. 3.] Explosive Substances Act 1883, his act shall constitute that offence if it is done in connection with the offence of hijacking committed or attempted by him on board that aircraft.
(2)It shall be an offence for any person in the United Kingdom to induce or assist the commission outside the United Kingdom of any act which—
(a)would, but for subsection (2) of section 1 of this Act, be an offence under that section ; or
(b)would, but for subsection (4) of section 2 of this Act, be an offence under that section ; or
(c)would, but for subsection (5) or (6) of section 3 of this Act, be an offence under that section.
(3)A person who commits an offence under subsection (2) above shall be liable, on conviction on indictment, to imprisonment for life.
(4)Subsection (2) above shall have effect without prejudice to the operation, in relation to any offence under section 1, 2 or 3 of this Act—
(a)in England and Wales, or in Northern Ireland, of section 8 of the [1861 c. 94.] Accessories and Abettors Act 1861; or
(b)in Scotland, of any rule of law relating to art and part guilt.