Letitia Tish Jones is the daughter of Francine Jones and Clive Jones, the older sister of Leo Jones and the Tenth Doctor's companion, Martha Jones; and the aunt of Keisha Jones. She was also cousin of the late Adeola Oshodi. At one point, works for Harold Saxon when he becomes Prime Minister. She and her family are caught up in The Year that Never Was, the result of another of The Master's diabolical plots.