Game of Thrones star Jack Gleeson will be joining Brendan O’Connor on this week's The Saturday Night Show.

The young Irish actor, who plays the sadistic King Joffrey on the hugely successful  HBO drama , will talk about his recent trip to Haiti with the humanitarian agency GOAL.

Gleeson, who has been studying Philosophy in Trinity College Dublin throughout his time on Game of Thrones, will also talk about what’s in store for his evil character in the fourth series of the show.

Derry-born actress and singer Bronagh Gallagher will also guest on The Saturday Night Show. As well as having a chat with Brendan about music and the late Seamus Heaney, she’l also perform live.

Other guests this week include Fine Gael TD Mary Mitchell-O’Connor and Katie O’Halloran - an inspirational, young Galway woman born with a rare syndrome leaving her without arms and with a short deformed leg.

The Saturday Night Show airs on RTÉ One on Saturday at 10.00pm