Black cab rapist John Worboys will be banned from entering Greater London if his prison release is upheld by the High Court.

Three leading judges are currently deliberating on whether to overturn the Parole Board’s January decision to allow the serial sex attacker to leave jail after hearing two days of legal argument.

The judges have reserved their ruling to a date yet to be confirmed and have also continued a temporary bar on the 60-year-old’s release.

If released, Worboys would be barred from entering Greater London or Sussex, and has agreed to a raft of extra measures including electronic tagging and lie detector tests, his barrister Edward Fitzgerald QC told the court.

Phillippa Kaufmann QC, representing two of Worboys’ victims challenging the decision to grant him parole, said the “massive exclusion zone” was “hardly a condition imposed on someone believed to be open and honest."

Earlier in the proceedings, Mr Fitzgerald told the court: "He has completed his tariff and he is therefore entitled to be released if it is not necessary for the protection of the public that he be detained.

"The Parole Board had directed his release, he was entitled on their direction to freedom and he has had that taken away.

"I think it is a unique case in which someone who has been granted his freedom has then had it taken away from him.”

Worboys was jailed in 2009 to serve a minimum sentence of eight years after he was found guilty of 19 offences including rape, sexual assault and drugging against 12 victims.

Police believe he attacked more than 100 women between 2002 and 2008 - picking them up as customers in his hackney carriage and drugging and assaulting them.

Two of his victims, who cannot be named for legal reasons, brought the challenge to overturn his release to the High Court, arguing something had gone “badly wrong” in the Parole Board process.

The Parole Board however says its decision was both “legal and rational”.