Section 1B Prisoners serving consecutive sentences including at least one terrorism or national security-related sentenceF1F15

a prisoner has been sentenced to two or more terms of imprisonment which are to be served consecutively on each other,

one or more of the sentences (the “terrorism or national security-related sentence”) was imposed—

the sentences were imposed on the same occasion or, where they were imposed on different occasions, the prisoner has not been released under this Part at any time during the period beginning with the first and ending with the last of those occasions.

if the prisoner is serving a sentence that is not a terrorism or national security-related sentence, the custodial part of the sentence, and

the custodial part of each terrorism or national security-related sentence that the prisoner is serving.

a sentence that is not a terrorism or national security-related sentence is imposed on the prisoner (the “new sentence”), and

the prisoner has already served part of the custodial part of a terrorism or national security-related sentence (the “served part”).

where the served part is less than the custodial part of the new sentence, such part of the custodial part of the new sentence as is equal to the served part,

where the served part is equal to the custodial part of the new sentence, the custodial part of the new sentence,

where the served part exceeds the custodial part of the new sentence—

the Scottish Ministers to release the prisoner in respect of any of the terms of imprisonment unless and until they are required to release the prisoner in respect of each of the other terms of imprisonment,

the Scottish Ministers or the Parole Board to consider the prisoner's release in respect of any of the terms of imprisonment unless and until the Ministers are or the Board is required to consider the prisoner's release, or the Ministers are required to release the prisoner, in respect of each of the other terms.

any period served concurrently in accordance with subsection (4), and

if (but for this section) the prisoner would have been released unconditionally under section 1(1) in respect of a F12sentence that is not a terrorism or national security-related sentence, the period equal to one-half of the term of that sentence.

the Scottish Ministers are required to release the prisoner under this Part, or

the Parole Board is first entitled under this Part to make a recommendation that the prisoner be released on licence under this Part.

references to a F13sentence that is not a terrorism or national security-related sentence include references to two or more such sentences that are treated as a single term by virtue of section 27(5) (whether imposed before, after or both before and after a terrorism F14or national security-related sentence), and

where subsection (7) applies, the references in that subsection to the “custodial part of the new sentence” include references to the custodial part of the single term.