2017 | 15 Episodes

Season 1 of A1: Britain's Longest Road premiered on May 8, 2017.

2018 | 10 Episodes

Season 2 of A1: Britain's Longest Road premiered on April 30, 2018.

2018 | 10 Episodes

Season 3 of A1: Britain's Longest Road premiered on September 24, 2018.

2019 | 10 Episodes

Season 4 of A1: Britain's Longest Road premiered on May 27, 2019.