Born in Malatya Turkey to Alevi parents of Kurdish descent, Feryal Demirci Clark's family moved to the United Kingdom when she was seven. She studied Bioinformatics at the University of Exeter.

Clark was elected as a councillor for the Hoxton East & Shoreditch ward in the London Borough of Hackney in 2006 and rose to become the Deputy Mayor of Hackney and Cabinet Member for Health, Social Care, Leisure and Parks.

In October 2019, she was selected as the prospective parliamentary candidate for Enfield North and was elected during the 2019 general election, becoming Labour's first ever Kurdish MP.

She is considered as being on the right wing of the Labour Party and endorsed Yvette Cooper during the 2015 leadership election.

Clark endorsed Lisa Nandy for Leader of the Labour Party during the 2020 leadership election.

She won the elections in December 2019 and became the first Turkish-British member of the U.K. parliament, representing Enfield North.

She is married to Edward Clark.