Prison advocates are concerned about a new, fully-private women’s prison in Queensland.

Private firm Serco has been transitioning the Southern Queensland Correctional Centre at Gatton, 100 km west of Brisbane, into a women’s prison.

Male inmates currently incarcerated there have been moved to other prisons to make way, with transfers to the new women's prison to begin in a matter of days.

Debbie Kilroy from advocacy Sisters Inside says it is the first time Serco has had full control of a women's prison, and she is concerned about the company’s human rights record.

“It runs a number of detention centres ... [including] the Yarl's Wood detention centre in the United Kingdom, where women have said that they have been physically and sexually assaulted by staff,” Ms Kilroy told the ABC.

“We're also concerned about a private corporation hiding behind commercial-in-confidence; because it is not a state-run prison, it will not be open and accountable to taxpayers.”

Reports say Serco has been given access to state prisons to promote its new private facility.

“Corrective Services has sent newsletters out to stakeholders to state that Serco is inside Brisbane Women's [Correctional Centre], running information sessions and doing mentoring to ensure that the transfer of women coming from Brisbane Women's [Centre] to Gatton runs smoothly,” Ms Kilroy said.

“So they're rolling out a red carpet for the women that they want to come into their prison, and getting women to sign up under their own volition.

“The women are telling us that Serco staff are talking to them and they're signing papers, documents, to say that they're happy to transfer across.”

Serco says the claims are false, and Ms Kilroy admits there is no way to prove them.

“The women have no other access to anybody else from the free world — not Sisters Inside, not legal services, not any other support services — to give them a different view of what the prison would be and that it's a private run prison,” Ms Kilroy said.

“It's actually narrow, single-focused marketing because only Serco is allowed in there to do that.”