Despite Mr Hall, 58, consenting to the extradition orders, he remains in Parklea Correctional Centre with no deadline as to when British fraud investigators want him in London to face any possible charges.

Mr Hall, pictured, was arrested on October 20 following a worldwide investigation into alleged illicit payments involving billion-dollar contracts to sell Australian bauxite to an aluminium smelter in Bahrain.

He was the chief executive of Aluminium Bahrain (also known as Alba) from September 2001 until June 2005, when it is alleged there were payments to executives and Bahrain government officials to ensure Alba paid inflated prices for alumina.

Mr Hall has denied any wrongdoing and had been co-operating with British and United States investigators before his arrest.

But he has since remained in Parklea without any word on when he may be extradited to London to face any charges.

The London-based Serious Fraud Office (SFO), which is running the case and has already arrested an ‘‘international businessman’’, the Canadian Phillip Dahdelah, would only confirm that the case against Mr Dahdelah was ongoing.

A statement given to the Herald would not answer any questions about when or if any charges would be laid against Mr Hall or when he could expect to be extradited.

‘‘It is not SFO policy to confirm details of co-conspirators prior to charge,’’ a statement said.

The head of the NSW Council for Civil Liberties, Cameron Murphy, said yesterday the Hall case was another reason why there should be an immediate and thorough review of extradition laws to introduce ‘‘clear rules’’.

A NSW Department of Corrective Services spokesman confirmed Mr Hall was being held on an extradition warrant and it would be the British authorities who decided when he would be taken to London.

Mr Hall began his career at Newcastle Steelworks in 1971 and was general manager of Tomago Aluminium from 1998 until 2000.

After leaving Alba in 2005, he was appointed chief executive of A.J. Mayr engineering at Tomago before moving to Oman with Sohar Aluminium.

He returned to Australia in 2010.

A spokesman for the Australian Attorney-General’s Department said last night:

‘‘The time taken to resolve an extradition request can vary from a few months, if the person consents to extradition, to a few years if a person wishes to contest his or her extradition and exercise all rights of review and appeal.’’