Back is a British sitcom starring David Mitchell and Robert Webb. It was filmed and is set in and around Stroud, Gloucestershire. The Channel 4 series was created by Simon Blackwell, and its first series was broadcast from 6 September – 11 October 2017.A second series of six episodes was announced in November 2017; filming was scheduled to begin in October 2019. On 19 September 2020, Webb announced that the second series' shooting had concluded. Series two began airing on 21 January 2021. The series premiered on Sundance Now in December 2017 before premiering on Sundance TV in the US in September 2018. The second season premiered on 31 March 2021 on sister network IFC in the US a week later after it premiered in full on Sundance Now on March 24.