Flat trainer Lynda Ramsden is to retire at the end of the current season.
Ramsden helped launch the career of Kieren Fallon
It is the second time that she has relinquished her licence after she decided to quit in 1998, only to return for the 2001 season.
The trainer and her husband Jack now plan to sell their yard near Thirsk, and spend more time in France.
"We will be carrying on until the end of the season. We feel that we have done it for long enough," Jack Ramsden told the Racing Post.
"Prize money isn't great - and we own quite a lot of the horses ourselves - and finding suitable staff isn't easy.
"We will carry on owning a few horses but will be able to spend more time in the south of France, where we have a house."
Mrs Ramsden's first major success came when Travelling Light won the 1990 Chester Cup and she took the stayers' contest twice more with Top Cees in 1995 and 1997.
She also helped launch the British racing career of Kieren Fallon, who teamed up with her not long after the Irishman first based himself in England.
The Ramsdens' daughter Emma, who is a Channel Four racing presenter, is married to top jockey Jamie Spencer.