It was an English limited overs county cricket tournament which was held between 27 June and 1 September 1990.
[1] The tournament was won by Lancashire who defeated Northamptonshire by 7 wickets in the final at Lord's.
The seventeen first-class counties, were joined by thirteen Minor Counties: Berkshire, Buckinghamshire, Devon, Dorset, Durham, Hertfordshire, Lincolnshire, Norfolk, Oxfordshire, Shropshire, Staffordshire, Suffolk and Wiltshire.
The Ireland and Scotland teams also participated.
The winners in the second round then progressed to the quarter-final stage.