Bad Wolf Ltd. is a television production company founded by Julie Gardner and Jane Tranter in 2015 based in Cardiff, Wales, United Kingdom.

[8] Later that year, they also received investment from European media conglomerate Sky Group and American network HBO in return for minority stakes in the company.

[10] In April 2020, Bad Wolf announced that had commenced work on I Hate Suzie starring Billie Piper, whom Gardner and Tranter's associate Russell T Davies had cast in the major role of Rose Tyler on Doctor Who.

[11][12] On 24 September 2021, BBC Studios announced that Bad Wolf would become co-producer of Doctor Who itself starting in 2023, following the scheduled departure of the series' current showrunner, Chris Chibnall, who occupied the role from 2017 to 2022.

[15] The deal brought in a new member, Natasha Hale, along with a long-term partnership to produce future productions and boost Cardiff's standing in the entertainment industry.