Gerry McArdle's early performing career embraced the worlds of musical comedy, straight drama and cabaret, and began in earnest in 1973 in Australia where he toured with Sir Michael Redgrave in "A Voyage Round My Father", Sir Ralph Richardson in "Lloyd George Knew My Father" and Jimmy Edwards and Eric Sykes in "Big Bad Mouse". He acted in local Television and Radio Productions, was a resident with The South Australian Theatre Company and worked with the State Opera of South Australia and the Drama Dept. of Adelaide University.

He returned to Ireland in 1978 and appeared at the Damer, the Project Arts Centre, the Oscar Theatre, Cork Opera House and taught drama at the Royal Irish Academy of Music. He worked, for a time, as Stage Manager in television. For two years he was a member of the RTÉ Players, acting the role of "Buck Mulligan" in their celebrated recording of Joyce's "Ulysses", and is the author of a number of Radio Plays, including the critically acclaimed "Melchizedek's Misfit". His programmes celebrating the life of Micheál Mac Liammoir, and his 50th Anniversary Tribute to "The Rep" were favourably received by critics and public alike.

His dramatised recording of Shane McGowan's "Fairytale of New York", released by EMI, spent a fortnight at No.7 in the Irish Top Ten during Christmas 2000, went "gold" and raised £10,000 for the Society of St. Vincent De Paul.

His voice is well known on RTÉ Radio, and he still turns his hand to the occasional bit of acting. Apart from producing documentaries and musical programmes, including a series based on the work of Gilbert and Sullivan, he recently produced "Audioscope" and developed "Outside the Box", Radio 1's programmes for people who are either blind or disabled, and was responsible for introducing presenters Bethan Collins and Olan McGowan to the radio audience. He still produces "Outside the Box" and one of his major interests is religious programming.

He has been a regular and popular compere with the RTÉ Orchestras, enjoying face to face contact with live audiences, and wrote, presented and directed his own show with the Concert Orchestra, "Brush Up Your Shakespeare".