[1] Beginning his career in 1962, Gildas became the director of information for an RTL radio station.

Nulle part ailleurs was a comedic talk show that took serious issues and put a humorous spin on them.

[6] In 2007, he launched Vivolta, a television network aimed at Baby boomers.

In 2010, Gildas published an autobiography titled Comment réussir à la télévision quand on est petit, breton, avec de grandes oreilles ?.

In 2018, Gildas made his final television appearance in the TV documentary La Télé des années 80 : les Dix Ans qui ont tout changé, aired on France Télévisions.