[4] In late 2013, Rhiannon appeared as the lead role, Holly Streetter, in The Girl That Lived, a short film made in association with the mental health charity MIND.
At the beginning of 2014, Rhiannon was part of the revival of Dick Backard: Private Eye at The Bedford, which opened to excellent reviews; the show had a further run at Hoxton Hall.
[11] 2015 also saw many concert performances from Rhiannon, most notably Boom Bang-a-Bang at The Pheasantry, which celebrated the life and works of Ivor Novello award-winning composer Michael Julien, featuring the man himself.
[16] Also in 2019, as one third of jazz trio Viva La Vamp, Rhiannon was a grand finalist at Open Mic UK, placing third.
[17] Alongside her brother Will, Rhiannon was a winner of the inaugural Ceiling Project, a platform aimed at supporting women-led writing teams in producing pieces of musical theatre focussed on women.
[18] Rhiannon was also musical director and co-composer of a revival of The Wind of Heaven by Emlyn Williams at the Finborough Theatre, London in December 2019.