The North Yorkshire-based trainer has saddled more than 150 winners for the past six seasons. In 2015 equalled the record for most winners in a calendar year with 235 - a figure eventually broken by Mark Johnston in 2019.
The Irish-born Fahey has trained high profile names such as Gabrial, Kimberella, Superior Premium, Mayson and Wootton Basset. But arguably his most famous charge was Ribchester, whose major wins include the Queen Anne Stakes and Lockinge Stakes
Fahey told Great British Racing: "I would never have dreamed of reaching 3,000 winners when I started out, to have had 30 would have been enough back then!
"However, I'm obviously delighted to have reached such a fantastic milestone now and the credit must go to all my team as I wouldn't have been able to do it without them.
"If I had to pick one highlight, it would have to be Ribchester breaking the track record in the Queen Anne Stakes at Royal Ascot, it doesn't get much better than that!"
A former jockey who rode more than 100 winners, Fahey's training career began in 1993 and just seven years later he registered his first Royal Ascot win through Superior Premium in the Cork And Orrery Stakes.
His tally of 3,000 winners in Britain is made up of 2,859 on the Flat and 141 under National Hunt rules.
Paul Hanagan, who steered Hong Kong Harry to victory, has ridden more winners for Fahey than anyone else, with the pair enjoying 895 successes together.
Hanagan said: "I joined Richard when I was 17 years old and we have both grown together ever since, enjoying some fantastic days and moments together.
"There is no way I would have been able to achieve what I have achieved in my career, for example the two Champion Jockey titles, if it weren't for Richard.
"We have become great friends and I'm over the moon for him to have reached this fantastic milestone."