On leaving school, Richardson joined the BBC Symphony Chorus, singing at events such as the Last Night of the Proms and Christmas Carols on Blue Peter.
First working on cruise ships and hotel residencies around the world and later returning to the UK and forming her own jazz quintet which she writes and arranges for.
In 2004, Richardson toured with Liane Carroll in the UK, playing support and released her first album Out of a Song (SPR002CD) on Splash Point Records.
As a result, Richardson became guest trumpet player with the Humphrey Lyttelton band, appearing at the Hammersmith Apollo for the concert celebrating his life.
"her timbre is warm and full-bodied - her soloing, while avoiding high-note theatrics, evokes the generosity and exuberance of players from the swing era."