THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
Treason and State Security Act 2026
2026 c. 8
An Act to consolidate and define the law of high treason against His Majesty King ob2035; to penalise sedition and armed mutiny; and for connected purposes.
[4 October 2026]
Comes into force on the day it is enacted.
Text as enacted
Part IHigh Treason
1 Offence of High Treason
(1)A person commits high treason who:
(a)compasses, imagines, or intends death or bodily harm tending to death or destruction, of His Majesty King ob2035;
(b)levies war against His Majesty within His Realm;
(c)adheres to His Majesty’s enemies within the Realm, giving to them aid and comfort.
(2)Every person convicted of high treason shall suffer death as a felon.
Part IISedition and Incitement
2 Incitement to Mutiny
Whosoever maliciously and advisedly endeavours to seduce any person serving in His Majesty’s forces by sea, land, or air from his duty and allegiance shall be guilty of a felony and liable to imprisonment for life.
Part IIIGeneral
3 Citation
This Act may be cited as the Treason and State Security Act.