An abuse victim at a boys' home in Belfast has been granted permission to legally challenge the UK government's refusal to order a statutory inquiry into the crimes committed there.
A paedophile ring abused boys from the Kincora home in east Belfast during the 1970s.
While three staff members were convicted in 1981, it has long been alleged that well-known figures in the British establishment - including senior politicians - were also involved.
Moreover, it has been claimed that the UK security services knew about the crimes but did nothing to stop them, instead using the knowledge to blackmail and extract intelligence from influential men who were committing abuse.
Last year, the government rejected calls for Kincora to be included in the terms of its wide-ranging inquiry into child abuse - which is now being chaired by New Zealand judge Lowell Goddard.
Northern Ireland Secretary Theresa Villiers said a more appropriate forum for the allegations to be investigated was through an on-going Stormont-commissioned inquiry into historical institutional abuse.
But campaigners have highlighted that the inquiry, chaired by retired judge Sir Anthony Hart, does not have the powers to compel security services witnesses to give evidence.
Former Kincora resident Gary Hoy applied for leave at Belfast High Court to judicially review the positions of Ms Villiers and Sir Anthony.
After hearing submissions, Mr Justice Seamus Tracy said an arguable case had been presented.
He listed a full judicial review for the first week in June.
