Winstone worked for Virgin Books, overseeing their Missing Adventures Doctor Who series and briefly being in charge of the New Adventures after the series had ceased being a Doctor Who tie-in. His only novel, the New Adventure Where Angels Fear, was co-written with Rebecca Levene, his predecessor on the New Adventures.
Winstone moved into TV, working on the soap Emmerdale for a period. He then worked on EastEnders for many years. In 2005, Winstone was announced as a script editor for the next series of Doctor Who on TV, a role he has continued into 2007.