Sienna Arif - Knights is a young British actress known for her role of Sally Hope in Seasons 1 - 5 of Malory Towers, TV (2020 - 2023), Keziah in Season 2 of Good Omens, TV (2023) and Tia in Blabbermouth, Short Film (2024). Sienna begun her professional career when she featured in the 2017, First Choice "Go With The Know" worldwide campaign as part of the Turner Family. She has also appeared in commercials for The CO-OP (2019) and BT Sports (2018). Sienna Arif - Knights trains at the BRIT School in London (2024).