Foulkes has written and directed several short films including, Dumpy Goes to the Big Smoke (2012), which won the prize for Best Director at the Sydney Film Festival and was nominated for two AACTA Awards (formerly the Australian Film Institute Awards, also known as the AFI Awards) in 2013; Florence Has Left the Building (2015) starring Jacki Weaver, which premiered at the Melbourne International Film Festival and won the 2015 AACTA Award for Best Short Fiction Film; and Trespass which had its International Premiere at the Toronto International Film Festival in 2016. In 2013, Foulkes co-wrote the short film Eugene for the Intel and W Hotels Four Stories competition. She is the only female member of the Australian film-making collective Blue-Tongue Films.
In 2010, for her acting, Foulkes was nominated for Best New Female Talent at the Logie Awards.
In 2013, she was nominated for the AACTA Award for Best Actress in a Supporting Role for The Turning.
In 2005, Foulkes had a two-episode guest role in Blue Heelers
Foulkes has appeared in several Australian feature films since 2006, including Spider (2007), Dying Breed (2008), Animal Kingdom (2010),; the erotic drama Sleeping Beauty (2011); and in the Australian anthology film The Turning (2013).
In 2009, Foulkes joined the cast of the long-running Australian TV series All Saints in the role of specialist rescue paramedic, Jo Mathieson, in the newly formed Medical Response Unit. She appeared in every 2009 episode prior to the series' cancellation in October 2009 by Channel 7.
In 2010, for her acting, Foulkes was nominated for Best New Female Talent at the Logie Awards.
In 2011, she featured in Wild Boys as the feisty outlaw Jessie West, a female bushranger.
Foulkes has written and directed several short films including, Dumpy Goes to the Big Smoke (2012), which won the prize for Best Director at the Sydney Film Festival and was nominated for two AACTA Awards (formerly the Australian Film Institute Awards, also known as the AFI Awards) in 2013; Florence Has Left the Building (2015) starring Jacki Weaver, which premiered at the Melbourne International Film Festival and won the 2015 AACTA Award for Best Short Fiction Film; and Trespass which had its International Premiere at the Toronto International Film Festival in 2016. In 2013, Foulkes co-wrote the short film Eugene for the Intel and W Hotels Four Stories competition. She is the only female member of the Australian film-making collective Blue-Tongue Films.
In 2013, she was nominated for the AACTA Award for Best Actress in a Supporting Role for The Turning.
In 2014, she joined the cast of the CBS hit remake TV series Hawaii Five-0 in the recurring role of Ellie Clayton, a Lawyer, who is connected to Lieutenant Commander Steve McGarrett Alex O'Loughlin through his father.
In 2015, she played the role of Kellie Norton in the Australian television miniseries The Principal.
