He had a thirty-year-career writing for British television, which spanned from the late 1950s until 1989. Due to the widespread practice of wiping recordings done in the 1950s and 1960s, however, it's unclear how much of the first half of Steven's career survives in the 21st century.
Colin Baker's first story was actually one of Steven's last. His difficulty in trying to conceive and write a story for a new Doctor under short notice following the decision to push it forward to the end of Season 21 led to a languished production, eventually forcing Eric Saward to make a large number of hasty edits to his script.
A few episodes of All Creatures Great and Small are the only efforts which post-date Dilemma on Steven's resumé. Doctor Who fans who also watched All Creatures will likely remember one of his episodes as being particularly poignant. Steven's "Matters of Life and Death" was a 1980 episode that guest-starred Nicholas Courtney as a town resident profoundly affected by the inevitable death of his dog.
- Internet Movie Database at the