It was the first season in which the domestic T20 competition, run by the ECB, has been branded as the Vitality Blast due to a new sponsorship deal.

The final day took place at Edgbaston Cricket Ground in Birmingham on 15 September 2018.

Nottinghamshire Outlaws were the champions going into the tournament having beaten the Birmingham Bears by 22 runs in the 2017 final.

[2] The 18 first-class county cricket clubs are taking part in the competition.

Teams are ranked within their groups by total points, then net run rate.