In the initial phase of her employment — at least as it is relevant to the history of Doctor Who — she greatly expanded the number of film positives and negatives of the videotape masters of Doctor Who episodes. For a short time, this action ensured that every episode of Doctor Who existed in BBC Enterprises' vault, even though the separate BBC archives had already wiped all the videotape masters themselves. Nevertheless, her team's record keeping was probably of signal importance in tracking down some episodes recovered from overseas broadcasters.