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HMP Whatton/Release

Release

Release dates, HDC, and what families can usefully prepare.

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What this actually means

Families hear a date early and treat it as fixed. It is not. Offence type, SDS40 eligibility, HDC and behaviour all move it.

Use a calculator to get oriented. Then treat the prison’s figure as the only operational date.

The useful work before release is practical: ID, an address, a phone, a bank account. The date is the last thing, not the first.

Official

How release dates are set

  • For many standard determinate sentences, automatic release is at the halfway point — then licence until the end of the sentence.
  • Some sentences now release at 40% (SDS40). Some serious offences release at two-thirds.
  • Time spent on remand usually counts towards the sentence.
  • Home Detention Curfew (tag) can bring some people out earlier. It is not automatic.
  • Only the prison / offender manager can confirm the actual date. Calculators are estimates.
Source: HMPPS / GOV.UK · Last checked: September 2026
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