Jenny moved to London in 1992 from her native home in Cork, Ireland. She began her career in the UK mainly working in Theatre. In 1994 Jenny joined the National Youth Jazz Orchestra; she toured extensively with them in the UK and abroad, and appeared several times at Ronnie Scott's where she is featured on many of their live albums including Cottoning On, In Control, and A View From The Hill. She is also featured on the compilation album Nite at Ronnie's. Consequently she began working with Shakatak and toured Japan with them.
Jenny recorded the main soundtrack for the film The Brylcreem Boys, starring Gabriel Byrne and Jean Butler, and sang at the Cannes film festival, where it was premiered. Since then she’s been featured singing in films including Dream, Hot Gold, and the James Ellroy film L.A. Sheriff's Homicide. She played the part of Mrs Croucher in the Spike Milligan film Pukoon, starring Elliot Gould and narrated by Sir Richard Attenborough. Other TV credits include TFI Friday, BBC Hall of Fame, CH4 comedy series Barking, and BBC Looking Good. She has also done voice-overs for programs such as BBC's Ballykissangel, Falling for a Dancer, the Channel Five series The Imperial War in Colour, National Geographic, and an Alpha Romeo commercial.
Downtime - a dance album released by the band Playpen - features Jenny singing lead vocals on two co-written tracks, and has been played on many ITV and BBC programmes. Jennysung on the track “Heaven on Earth” with production outfit Shut up and Dance, Jenny appeared at the Queen Elizabeth hall singing with a 45 piece orchestra in a show “Rhapsody in Blue” celebrating the music of Gershwin. Recent work includes sampling sessions for Yamaha and Roland, and she has also record the album Second Take.