Delia Bushel, CEO of Jockey Club, has resigned
Delia Bushel, who has been in the position since September 2019, resigned on Sunday after taking disciplinary measures that began on the basis of gross misconduct.
In a letter published in the Racing Post, Bushell expressed her "shock and sorrow" at the decision.
She said, "I have experienced unworthy, disgraceful behavior, bullying by people I previously respected and trusted.
"Due to the toxicity of the work environment in which I find myself, the prioritization of discipline and clear and ongoing threats to my reputation, I have no choice but to accept the solitary behavior described in this letter and resign with immediate effect."
The lawyer who led the investigation also found evidence of witness tampering.
The Jockey Club board concluded that it was "unacceptable" for her to remain in the position.
The announcement was made by Jockey Club - which operates 15 race tracks including Aintree, Cheltenham, Newmarket and Epsom Downs - that it has appointed Nevin Truesdale as acting CEO of the group after Bushel's sudden departure.
BBC Sport said the position would be reviewed by the England and Wales Cricket Board.