She is known for her roles as Chloe Voyle on the Channel 4 drama Ackley Bridge and Agnes Duffett on the CBBC series Hetty Feather.
When Fern Deacon was five, her parents enrolled her in acting classes, and at the age of 11, she was accepted into Sylvia Young Theatre School.
[3][4] Deacon made her television debut in "Amy's Choice", an episode of the BBC series Doctor Who.
[7] Later that year, she began portraying the role of Chloe Voyle in the Channel 4 school drama Ackley Bridge.
[8][9] In the same month, she began appearing in the CBBC series Hetty Feather as Agnes Duffett, a role she portrayed until 2020.