Dana Rosemary Scallon has lost a High Court application requiring her sister and niece to put up security for legal costs should they lose a defamation they are taking against the singer and former presidential candidate.

A judge hopes to give his decision in December on the High Court case taken by former presidential candidate and singer Dana Rosemary Scallon seeking that her sister and niece put up money to cover the legal bill which would arise should they lose their defamation case against Dana.

A sister and niece of Dana Rosemary Scallan will be unable to proceed with defamation actions against her if the court requires them to provide security for her legal costs.