The UDA South East Antrim Brigade was previously one of the six brigades of the Ulster Defence Association (UDA) and are heavily involved in the drug trade. It is claimed they control "100%" of an illegal drugs network in south-east County Antrim, Northern Ireland. A mural in support of the group lists its areas of activity as being Rathcoole (the mural's location), Rathfern, Monkstown, Glengormley and Whitewell, all of which are part of Newtownabbey, as well as Carrickfergus, the Shore Road, Greenisland, Ballymena, Whitehead, Antrim and Larne. A newer mural in the Cloughfern area of Newtownabbey and flags have updated the areas to include Ballycarry, Ballyclare, the rural hinterland of Ballymena called 'Braidside' and despite not being in County Antrim, the town of Newtownards. The Guardian has identified it as "one of the most dangerous factions". The Irish News described the brigade as 'powerful' and at one time being 'the most bloody and murderous gang operating within the paramilitary organisation'. Since 2007 the South East Antrim Brigade has operated independently of the UDA following a fall-out.

Emergence under Alan Snoddy

It is unclear when South East Antrim (SEA) was first designated as a brigade area although its first recognised leader was Alan Snoddy and he held the title of Brigadier by at least 1979. Snoddy was close to UDA leader Andy Tyrie and was recognised as one of his closest allies amongst the UDA leadership.

UDA South East Antrim Brigade

Amongst the Brigade's most notorious attacks during the Troubles was the attempted killing of Sinn Féin president Gerry Adams in 1984. Adams was in a taxi near Belfast City Hall with some associates when another car containing John 'Grug' Gregg and two fellow Rathcoole UDA members pulled up alongside and opened fire on Adams. Adams was hit five times in the attack but the taxi rushed to the Royal Victoria Hospital where he received treatment and survived. Gregg, Colin Gray and Gerry Welsh were immediately arrested by the waiting British Army, who had doctored the bullets to reduce their lethality. They were convicted for the attack the following year. The attack is commemorated in the song South East Antrim Brigade by loyalist singer Rab C, many of whose compositions were about the brigade and its leading members.

UDA South East Antrim Brigade

In the later 1980s Snoddy took ill with cancer and many of his duties as brigadier were filled by his ally Joe English. Snoddy died from the illness in September 1988 and English immediately succeeded him.

UDA South East Antrim Brigade

Towards ceasefire under Joe English

As brigadier Joe English enjoyed, theoretically, more power than his predecessor, as Andy Tyrie had been removed from the UDA leadership and replaced by a collective leadership of the movement's six brigadiers, including English. As the oldest member, English usually chaired the meetings of this Inner Council, although he often struggled to control UDA West Belfast Brigade brigadier Johnny Adair. The two clashed frequently and, in 1993, Adair even threatened to kill English after English had suggested that the UDA should not claim the murder of Marie Teresa Dowds de Mogollon, which Adair's top hitman Stephen McKeag had perpetrated. Later in the year, English was forced to confront Adair about rumours that Adair was considering attending an Inner Council meeting armed in order to eliminate the other five brigadiers and assume sole control of the UDA. English was a strong advocate of political means and pushed for the UDA to call a ceasefire in the early 1990s, a position that was anathema, at that point, to Adair.