1963 - The Gillette Cup began with all 17 first-class counties taking part, The competition was called "The Knockout Cup" for the first year, all matches were 65 overs a side
1964 - The previous season's top five Minor Counties teams added to those taking part. The competition was called The Gillette Cup from this year, all matches were reduced to 60 overs a side
1980 - Ireland added to those who take part in the competition. Last year the competition was sponsored by Gillette.
1981 - National Westminster Bank became the sponsors of the competition.
1983 - Scotland added to those who take part in the competition. The number of Minor Counties taking part increased from five to 13.
1992 - Durham, on achieving first-class status added to those taking part in the competition, and the number of Minor Counties reduced to 12.
1995 - Holland added to those taking part in the competition (but barred from home fixtures because of lack of turf pitches), and the number of Minor Counties reduced to 11.
1999 - Competition reduced to 50 overs.
2001 - C&G take over sponsorship. First two rounds of the 2002 tournament played at the end of 2001.
2005 - Coloured clothing introduced, although only for first-class sides.
2006 - The competition undergoes a total revamp. Instead of a knockout, the 18 counties plus Scotland and Ireland are put into two groups with the winners of each playing a final at Lord's. The format is not popular.
2007 - Friends Provident assume sponsorship. The groups are retained although the top two in each division progress into semi-finals.
2008 - Another overhaul with four zonal groups of five teams and then quarter-finals. The same format as the much-derided Benson & Hedges Cup.