He attended Garron Tower, a Catholic boarding school near Carnlough in County Antrim, and described his early childhood as ecumenical.
[2] Davis started as a news reporter with the American network ABC and BBC Northern Ireland before spending 11 years in the newsroom in RTÉ.
In 1986, he began co-hosting (with Thelma Mansfield) RTÉ 1's afternoon programme Live at 3, a role he would fill for eleven years.
[4] Davis returned to the screen in the late 1990s with a marine programme devoted to boats and the waters around Ireland called Out of the Blue, which ran for four series,[5] the last of which was broadcast in 2001.
[citation needed] In 2000, Davis presented a radio quiz show called A Question of Food.
[8] On 10 May 2015, Davis spoke on the topic of obesity on Marian Finucane's Sunday radio show (presented that day by Áine Lawlor).
Lawlor introduced Davis by remarking on his own substantial recent weight loss: "You look, you are literally, I'd say, about a third of the man that you used to be.