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The former housemaster William McGrath, who was known as the "Beast of Kincora", was imprisoned in 1981 for abusing boys as part of a paedophile ring which operated in the home.

McGrath held a leading role in the far-right loyalist movement Tara.

Mr Hoy's lawyers claimed authorities enabled McGrath to target vulnerable young victims so more information about the group could be obtained.

It was alleged that Royal Ulster Constabulary officers were prevented from investigating McGrath due to his role as an MI5 agent.

The off-spinner is third on Australia's all-time list of wicket-takers with only Glenn McGrath and Shane Warne above him.