She was born in England, grew up in County Clare, Ireland and has also lived in Korea, Sweden, and Hong Kong.

[1] In 1995, Leniston started her acting career while living in Seoul, appearing in Whats up Doogie, a Korean kids TV program.

In 2003, Leniston moved to New Zealand to star in her first motion picture, Meet Me in Miami, alongside Latin actors Carlos Ponce and Eduardo Verastegui.

The premier of Meet me in Miami in Houston in the 2006 summer was part of the Giving Hope tour in aid of victims of Hurricane Katrina.

[2] She has also been involved in a number of short films, commercials and modelling campaigns for brands including Ralph Lauren, The North Face, and Loreal hair care.