[1][2] The domestic T20 competition was run by the England and Wales Cricket Board (ECB) and was branded as the Vitality Blast due to the tournament's sponsorship.

[3] Somerset were the defending champions, having won their second title during the previous season.

[2] Somerset and Gloucestershire won their home quarter-finals, while Surrey and the Sussex Sharks also secured a place at Finals day with away wins against Durham and Lancashire Lightning respectively, thus producing an all South Group finals for only the second time; the last occurrence being in 2021.

In the final, Gloucestershire beat Somerset by 8 wickets to win their first title after an 22-year wait.

The playing format is the same as the previous season, where groups remain the same with the familiar North and South split, while each county will play 14 group-stage matches, seven at home and seven away.