Commentary First Group of Parts – Discipline Part 13 – Discipline: Miscellaneous and Supplementary Section 318: Arrest by civilian police of persons unlawfully at large
629.This section provides that a person who has been sentenced to service detention and is “unlawfully at large” (as defined by section 301) may be arrested by a member of the civilian police in the UK or a British overseas territory without a warrant and may be taken to wherever he is required to be detained. For example, a person sentenced to service detention and unlawfully at large in the UK could be arrested without a warrant and taken to the MCTC, which is where he would be required to serve his period of detention.