Looking at Sussex (purely as it has been mentioned earlier, there is an interest in the club and I have only time to look at 1 team).
Over the past 25 years (as far as I can see and I hope Im accurate) Sussex born players have contributed 9 Test appearances from players that debuted in that time.
It could get worse going back further.
During that 25 year period there were 3135 caps available (285 Tests x 11)
Sussex born players have contributed 0.2% of the places in England Test teams.
Thats shocking numbers, especialy when taken in conjunction with how few Sussex born cricketers are currently playing FC cricket.
The question is why Sussex produces so little cricket talent?
It is obviously a well managed County. Great selecion of overseas talent, well run and the little talent that is produced tends to represent the County rather than elsewhere.
A lot of kudos to the administration, but where are the born and raised cricketers?