[4] On 17 December 2020, the England and Wales Cricket Board (ECB) confirmed all the fixtures for the tournament.
[11] On the second day of Kent's match, Nathan Gilchrist was forced to withdraw from the game, after being told to self-isolate.
[16] Warwickshire won the Division One group to win their first County Championship title since 2012, with Lancashire finishing in second place.
[17] Warwickshire won the five-day match against Lancashire, to become the second winners of the Bob Willis Trophy.
Warwickshire and Lancashire finished first and second of County Championship Division One respectively, to play for the Bob Willis Trophy at Lord's.