Lansdown-Davies was educated at St Hilda's College, Oxford between 1997 and 2001 (where she was an exhibitioner and obtained a BA Hons in Modern Languages) and at Cardiff University (MSc Econ and PhD in Political Theory).
Lansdown-Davies was born in St Asaph and educated at St Hilda's College, Oxford (where she was an exhibitioner, between 1997 and 2001; there she obtained a BA Hons in Modern Languages). She later studied at Cardiff University (MSc Econ and PhD in Political Theory).