No. I was reading however the MOJ's guidance - "The care and management of transsexual prisoners" and found the following interesting - particularly 4.3 and 4.4.
4.1. Prison Rule 12(1) provides that women prisoners should normally be kept separate from male prisoners.
4.2. In most cases prisoners must be located according to their gender as recognised under UK law. Where there are issues to be resolved, a case conference must be convened and a multi-disciplinary risk assessment should be completed to determine how best to manage a transsexual prisoner’s location. See Annex D for more details.
4.3. A male to female transsexual person with a gender recognition certificate may be refused location in the female estate only on security grounds – in other words, only when it can be demonstrated that other women with an equivalent security profile would also be held in the male estate. In such circumstances she will be considered a female prisoner in the male estate and must be managed according to PSO 4800 Women Prisoners.
4.4. A female to male transsexual person with a gender recognition certificate may not be refused location in the male estate. This is because there are no security grounds that can prevent location in the male estate.
4.5. If a prisoner requests location in the estate opposite to the gender which is recognised under UK law, a case conference must be convened to consider the matter. The case conference will consider all relevant factors and make a recommendation to a relevant senior manager above establishment level who will make the final decision. If there is any doubt, it is advisable to seek legal advice from the Offender Management Team in the Ministry of Justice Legal Directorate.
4.6. Before a prisoner is placed in custody, attempts must be made to determine which gender is recognised under UK law. This is a legal issue rather than an anatomical one, and under no circumstances should a physical search or examination be conducted for this purpose. If attempts are unsuccessful, the prisoner should be placed according to the best evidence available and the prisoner’s gender status must be determined as soon as possible. If it emerges that a prisoner has been placed in the estate opposite to the legally recognised gender, a transfer must be arranged as soon as possible unless the prisoner requests location in this estate.