The Beast of Kincora

McGrath was a housemaster at Kincora, a working boys' hostel in East Belfast. In 1981 he was convicted of a series of sexual offences against boys in his care and sentenced to four years in prison; two other senior staff, Joseph Mains and Raymond Semple, were convicted alongside him. Press exposure in 1980 had forced the case into the open after years of abuse. McGrath became known as the 'Beast of Kincora.' This is the settled criminal core of the story, established by his conviction.

• BBC News — Kincora Boys' Home abuse: background and the 1981 convictions
• Wikipedia — William McGrath (Kincora housemaster; 1981 conviction; Tara)

Away from the home, McGrath was a hardline evangelical preacher and the founder and leader of Tara, a far-right, militant loyalist organization active in the sectarian politics of the era. Survivor and inquiry accounts describe him using his authority and his paramilitary connections to threaten the boys he abused into silence. We grade his leadership of Tara and his evangelical activism FACT; the specific intimidation of victims is well-attested in survivor testimony and the inquiry record, which we carry as such.

• Dictionary of Irish Biography — William McGrath (Tara; loyalist and evangelical activity)

McGrath founded Tara in November 1966, fusing hardline evangelicalism with 'British Israelism' — the fringe belief that Ulster Protestants descend from the lost tribes of Israel. Newly surfaced 1970s audio, reported by the Belfast Telegraph, catches him preaching an apocalyptic 'final conflict' and urging Ulstermen to defend their soil 'at the point of the gun.' He used Tara to work the seams of loyalist militancy: it cooperated with the Ulster Volunteer Force in the late 1960s (in 1966 McGrath circulated leaflets smearing the victims of UVF leader Gusty Spence as communists), and in 1969 he paid Billy Hanna — later the UVF's Mid-Ulster commander — to form 'vigilante groups' in Lurgan. In 1971, per journalist Martin Dillon and the Dictionary of Irish Biography, McGrath was among those who pushed Charles Harding Smith toward founding the Ulster Defence Association to replace the disbanded B-Specials; Tara also engaged in gun-running. The UVF alliance shattered in 1971 amid rumors about McGrath's sexuality and suspected intelligence links. We grade the network FACT and attribute the UDA-influence to Dillon and the DIB.

• Dictionary of Irish Biography — McGrath, Tara, the UVF, Billy Hanna, and the UDA's formation
• Wikipedia — Tara (Northern Ireland): founding (1966), British Israelism, loyalist network
• Belfast Telegraph — surfaced audio of McGrath's apocalyptic 'point of the gun' preaching

McGrath's authority was not only paramilitary; it was respectable, which is what made it a shield. He had Orange Order contacts dating to the 1940s and served as chaplain of the prestigious Fernhill lodge, where the Dictionary of Irish Biography records he had financial — and 'possibly sexual' — links to its leading member Sir Knox Cunningham, a Unionist MP who had been parliamentary private secretary to Prime Minister Harold Macmillan (McGrath left Fernhill in 1968, deeming it too ecumenical). He was an Ulster Unionist Party branch member and convention delegate, and from the late 1940s moved in the same circles as Ian Paisley, later taking part in Paisley's Ulster Constitution Defence Committee. This web of respectable affiliations is the point survivors have always stressed: McGrath used his standing across loyalist and unionist institutions to build an aura of authority he weaponized to intimidate the boys he abused into silence. The honest coda, which we carry: as rumors of his predatory behavior spread, these institutions distanced themselves — the Orange Order expelled him, and Paisley and other prominent unionists broke with him by the late 1970s. We attribute the Knox Cunningham 'possibly sexual' characterization to the DIB; the memberships and the shield-of-authority pattern are documented, and we do not suggest these institutions knew of or enabled the abuse.

• Dictionary of Irish Biography — Orange Order/Fernhill lodge, Sir Knox Cunningham, UUP, and the early Paisley association
• Wikipedia — William McGrath (unionist affiliations; later distancing as rumors spread)

This is the documented core of the intelligence controversy, and it comes from the establishment inquiry itself. The Hart/HIA Inquiry, while rejecting the broad cover-up thesis, criticized MI5 for consistently obstructing the Royal Ulster Constabulary's investigations into Kincora and for the destruction of MI5 files relating to the home. Obstruction of a criminal investigation and the destruction of records are serious findings on their own terms; they are the reason the larger cover-up question cannot simply be closed, even by an inquiry that declined to endorse it.

• The Guardian — Kincora abuse inquiry: top-secret files declassified; MI5's conduct
• BBC News — HIA Inquiry findings on Kincora and the security services

For decades, whistleblowers — most prominently former Army information officer Colin Wallace, and the ex-MI5 officer Brian Gemmell — and investigative journalists have alleged that British intelligence knew of the Kincora abuse, ran or protected McGrath as an asset, and suppressed investigations to preserve his utility. It is a serious, sustained claim. But it has never been officially established: the 2017 HIA Inquiry found no credible evidence that the security agencies were complicit in the abuse or used it for blackmail, and concluded that Wallace 'cannot be regarded as truthful' about what he knew. We grade this SOME SMOKE and correct a common overstatement: no inquiry 'revealed' McGrath was an MI5 informant — the one that examined it reached the opposite conclusion. What keeps it from being dismissed outright is the inquiry's own findings above: an agency that obstructs police and burns files invites exactly this suspicion.

• The Irish News — Colin Wallace critical of the Kincora report findings (2017)
• The Irish Times — 'MI5's murky role in Kincora scandal yet to be exposed'

Decades after the crimes, the state paid. In April 2026 a former Kincora resident who survived McGrath's abuse accepted a six-figure damages settlement from the Home Office, the Department of Health, and the Police Service of Northern Ireland. We report the settlement as fact and flag the standard caveat: a settlement is not an admission of liability — governments frequently pay to end litigation without conceding wrongdoing. What it does show is that the institutions involved judged the claim serious enough to settle rather than fight, which is itself part of the record.

• BBC News — Kincora survivor accepts six-figure damages settlement (April 2026)

McGrath died in December 1991, never having faced the wider questions about his intelligence connections, and the Kincora building on the Newtownards Road was demolished in 2022. Both the man and the place are gone; the paperwork is the unfinished business. Because MI5 destroyed files and much intelligence material remains classified or was routed away from the Northern Ireland inquiry's reach, survivors continue to argue the full record has never been independently examined. The physical story is closed; the documentary one is not.

• Wikipedia — William McGrath (death 1991) and the Kincora scandal's later handling