A judge has ruled that Scottish prison guidance allowing some transgender prisoners to be housed in jails matching their gender identity is unlawful. Lady Ross said external sex segregation in prisons must be based on biological sex, bringing an immediate legal blow to the way the Scottish Prison Service has been deciding where some prisoners are held.
The ruling matters now because it changes the legal footing for prison accommodation decisions in Scotland, where the question has been how to balance sex-based separation with the rights of transgender prisoners. For Women Scotland brought the judicial review against the Scottish government guidance after the Supreme Court ruling in April last year on the definition of a woman in equalities law, and the case has now turned that broader legal fight into a direct challenge to prison policy.
Lady Ross said the guidance conflicted with the requirement that prison accommodation be provided separately for men and women, and described it as a mis-statement of the law. In her words, “In all the circumstances, the prisons guidance is unlawful.” That finding means the policy that allowed some trans women to be considered for the female estate if they were not judged to pose an unacceptable risk can no longer stand in its current form.
The Scottish Prison Service had been using individual risk assessments before the ruling, and those assessments were still central to how it kept anyone who posed a danger to women out of the female estate. It also allowed for circumstances in which trans women could be housed alongside women if they were deemed not to pose an unacceptable risk to them. The court’s decision does not erase those practical concerns, but it does put them under a stricter legal test tied to sex-based segregation.
That is where the case became most contested. The Scottish government argued that a blanket rule would breach transgender prisoners’ human rights and create an unacceptable risk of suicide. Lady Ross accepted that all prisoners retain rights under the European Convention on Human Rights, and that Article 8 is engaged when prison accommodation is decided. But she said Article 8 does not automatically give a transgender prisoner a right to be housed in a prison designated for the opposite biological sex, because the right is qualified and can be restricted where there is legitimate justification, including maintaining sex-based segregation within the prison estate.
She also said exceptional circumstances could arise. In a serious threat to life, such as a risk of suicide, Article 2 of the European Convention on Human Rights might require consideration of whether accommodation in a prison for the opposite biological sex was necessary. That leaves the Scottish Prison Service with a narrower and more explicitly sex-based framework, while still forcing officials to think carefully about rare cases where safety and human rights collide.
For women in the female estate, the ruling is likely to be read as a clear legal endorsement of separation based on biological sex. For transgender prisoners, it narrows the circumstances in which gender identity alone can determine housing. What comes next is the unresolved part: how the Scottish Prison Service rewrites its guidance, and whether the Scottish government accepts the ruling or tries to challenge it further.
