Last updated: 23 January 2026
Standard Determinate Sentence
Also known as:
“SDS”
“Determinate”
A fixed-term prison sentence with automatic release at a set point. Currently release is at 40% of the sentence, but under the Sentencing Act 2026 this will change to one-third for many cases. This is the most common type of prison sentence.
Related Terms
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Standard Determinate Sentence
Licence
The conditions under which a prisoner is released before the end of their sentence. Breach of licence conditions can result in recall to prison.