She portrayed Jody Jackson in the British children's drama show Tracy Beaker Returns (2012), as well as the spin-off series The Dumping Ground (2013–2022).

[2] Then in 2012, she portrayed Jody Jackson in the CBBC drama Tracy Beaker Returns, later reprising her role in the follow-up series The Dumping Ground that premiered in 2013.

[10] She then made various film appearances; A Bullet Wasted (2019), Leap (2020), SeaView (2021) and Making Friends as the World Ends (2022).

In March 2022, it was announced that she had been cast as receptionist Scarlett Kiernan in the BBC soap opera Doctors.

[12] Also in 2022, in-between filming for Doctors, Pegg began making recurring presenting appearances on CBBC's Saturday Mash-Up!.