Alex Kingston is an English actress. Who trained at the Royal Academy of Dramatic Art in London. Active from the early 1980s, Kingston became noted for television work in both Britain and the US in the 1990s. Including her portrayal of the title role in the British miniseries The Fortunes and Misfortunes of Moll Flanders. Her regular role as Dr. Elizabeth Corday in the NBC medical drama ER. Later credits include the recurring role of River Song in Dr Who.