In the early 1990s, David Hannam undertook some minor roles in film and television, including as 'Guard D' in Singapore Sling (1993). But by 2000, he was beginning to work regularly as a script-writer.
In 2000, Hannam contributed to crime drama Stingers, followed by work on Jonathan M. Shiff Productions' live-action/animated children's fantasy series Horace & Tina (2001). Between 2000 and 2002, he contributed at least eight episodes to Something in the Air, and also wrote for Always Greener (2002). In the same period, he was writing for hospital drama All Saints, to which he contributed at least seven episodes between 2001 and 2004. In 2005, he contributed two episodes to Last Man Standing.
In 2003, Hannam began a productive association with The Sleepover Club: not only did he contribute at least nine episodes to the program between 2003 and 2007, but he was also script editor in 2003. In 2007, he resumed his connection with Jonathan M. Shiff Productions, contributing to Pirate Islands: The Lost Treasure of Fiji.
Between 2003 and 2011, Hannam was a regular contributor to Neighbours, for which he wrote over thirty episodes: he was also the program's story editor and story producer in 2008.
Screen Australia also credits Hannam with scripts for H2O: Just Add Water and Chuck Finn (series two): his name is not attached to any of the episodes for the former, and production of the latter was truncated by the bankruptcy of the production company.
'Heading to Hollywood with Scriptwriter David Hannam [radio interview]'. Breakfast with Red Symons. 774 ABC Melbourne. 26 May 2009. http://blogs.abc.net.au/victoria/2009/05/heading-to-holl.html (Sighted: 20/11/2012)
'CARLOTTA is based on the extraordinary life of iconic Les Girls headliner and Australian transgender pioneer, Carlotta. Spanning forty years of groundbreaking social and sexual upheaval, Carlotta lays bare the life of the sexually confused teenager Richard Byron and his flight from a neglectful and abusive household into the turbulence of the hedonistic Kings Cross of the sixties and seventies. We witness the birth of the transsexual underworld against the threat of criminal prosecution as well as social rejection and with it, the emergence of the all conquering drag queen and performer, Carlotta.'
Nowhere Boys2013series - publisher film/TV children's fantasy 'Four boys get lost in the forest, and discover, when they return home, that they have returned to an alternate world identical to theirs except for one startling difference - they were never born.' (Source: Screen Australia)
'The series looks at the lives of four best friends bound together by their shared experience of being 'the losers' in high school. Now ten years later the women are about to become winners, but at what cost?'