She was a finalist and won the Dame Joan Sutherland Audience Prize at the 2021 BBC Cardiff Singer of the World Competition.
During her undergraduate studies she made her first appearance at the BBC Proms in Stockhausen's Mittwoch aus Licht with ExCathedra.
[8] She was a Harewood Artist at English National Opera,[9] and she made her debut in October 2019 as a last minute replacement in Harrison Birtwistle's The Mask of Orpheus, directed by Daniel Kramer, conducted by Martyn Brabbins and with Costume design by Daniel Lismore.
Prior to working at ENO she was a chorister at Glyndebourne Festival Opera, understudying the roles of Suzuki in Madama Butterfly, Annina in Der Rosenkavalier and Dryad in Ariadne auf Naxos.
[10] During the pandemic of 2020, even with many cancellations, Barnett-Jones made her debuts with The Grange Festival in Precipice and her European Debut as Madame Flora in Menotti's The Medium at Oper Frankfurt Conducted by Sebastian Wiegle and Directed by Hans Walter Richter.