FSA director of conduct risk and asset management sector leader Dan Waters has decided to leave the regulator.
In an internal message to staff, FSA chief executive Hector Sants said: “It is with regret that I have to inform you that Dan Waters has decided to leave the FSA.
“Dan has determined that making the necessary long-term commitment to the complex set-up and operation of the new regulatory regime would not be the appropriate choice at this stage of his career.
“He is considering other opportunities that will allow flexibility to pursue his interests here in the UK while allowing him time to meet family obligations in the US.”
Sants added: “I wish Dan every success in the future and thank him for all he has done for the FSA.”
Waters will leave the FSA in December. He will be replaced by Christina Sinclair as director of conduct risk on an interim basis.