sentences:  "SeaChange" writers Andrew Knight and Andrea Denholm conceived the idea in 2003 and asked Bullen, a friend of Knight's, to develop it with them.A co-production between Australia's Channel Ten and Britain's Five, "Tripping Over" was broadcast in both countries at the end of 2006.In 2007, Bullen was approached by David Maher, a Fox World producer, who commissioned him to write a television pilot for UKTV.