The controversy around the case has dogged Ms Sturgeon, who has faced repeated demands to say whether Bryson is a man or a woman, and follows fierce and bitter divisions within the SNP and across Holyrood over the Scottish Government’s Gender Recognition Reform Act.

An urgent review of the SPS’s handling of the case concluded, however, there was no risk to women in the care of the prison service while Bryson was housed at Cornton Vale.

However, the full report into the scandal will not be published, with the SPS citing the “significant amount of personal detail” relating to Bryson as a reason for the document remaining secret.