[2] Chappell was born and raised in rural Warwickshire, her mother was an artist, her father runs a creative agency,[3] while her elder brother went on to be a video choreographer.
[3] She took a nine-month intensive course on acting, before moving to London,[4] where she joined the National Youth Theatre and performed in the West End.
[3][5] Chappell was part of the National Youth Theatre REP Company in 2015,[6] where she starred in Wuthering Heights by Emily Brontë, The Merchant of Venice by William Shakespeare and Consensual by Evan Placey.
[3] She then landed the role of Jennifer Strange in the 2016 Sky TV series adaptation of The Last Dragonslayer, before starring as Wendy Roberts in Anthony Horowitz's BBC TV series New Blood.
[3] Chappell has also been a regular in the BBC series Poldark since its third season, playing Morwenna Chynoweth.