[2][3] He began his career at Spiked's predecessor, Living Marxism, the journal of the Revolutionary Communist Party, which ceased publication after ITN won their libel action following Living Marxism accusing ITN of misrepresenting a picture of a prison camp during the Bosnian war.
[4] Since then, O'Neill has contributed articles to publications in the United Kingdom, the United States and Australia including The Spectator, the New Statesman, BBC News Online, The Christian Science Monitor, The American Conservative, Salon, Rising East and occasionally blogged for The Guardian,[5] before moving to The Daily Telegraph.
[8] He was critical of the 1998 Good Friday Agreement, which Sinn Féin and the Provisional IRA supported.
"[9][10] O'Neill has said that the environmental movement has become a "religious cult"[11] that is "waging war on the working class".
[18][19] In September 2019, he said on the BBC's Politics Live that British people should be rioting about delays to Brexit.