In 1973, Scales was cast with Ronnie Barker in One Man's Meat which formed part of Barker's Seven of One series, also for the BBC.
Also in 2003, she voiced the speaking ("cawing") role of Magpie, the eponymous thief in a recording of Gioachino Rossini's opera La gazza ladra (The Thieving Magpie).