Defence Act 1954
Obstruction of civil power.
148.— Every person subject to military law—
( a) who neglects or refuses to deliver over an officer or man to the civil power, pursuant to a warrant in that behalf, or
( b) who neglects or refuses to assist in the lawful apprehension of an officer or man accused of an offence punishable by a civil court,
is guilty of an offence against military law and shall, on conviction by court-martial, be liable to suffer imprisonment F112 [ for any term not exceeding two years ] or any less punishment awardable by a court-martial.