The two officers rarely saw each other despite working at the same police station, as the juror was a former uniformed officer and the officer in charge was in the Criminal Investigation Branch.
The juror said her former profession or association with the officer in charge would not affect the way she would assess the evidence when asked by the Judge.
The ex-cop, who retired around three years before the case, was then allowed to remain on the jury and later elected foreperson.
Mr T's trial counsel later recognised the jury foreperson and consulted with him about this and he agreed that she should remain a juror, signing a note saying so.
The Court of Appeal dismissed his appeal against his conviction, noting that jurors are only disqualified if they are a serving police officer.
It was satisfied that the juror "had no past or present connection with the case of the officer in charge, and that she had given the judge and assurance she was capable of performing her obligations."
The Supreme Court supported the Court of Appeal's decision and said that there was no indication in Mr T's appeal that the previous court had erred in its judgment.