Tosh is an ensemble member of Shaun Micallef’s Mad as Hell on the ABC. On Mad as Hell he plays a diverse range of characters, such as advertising guru Flornoy Quimbie and ranting idiophobe Caspar Jonquil.

He also played the role of Marcus in Paper Giants: Magazine Wars (2013) and in 2014 he appeared twice as a panelist on Dirty Laundry Live and was a guest on Live on Bowen. In 2015, as well as appearing in season 5 of Mad as Hell, he played the role of Phil in the feature, The Subjects.