Tennant’s current role is manager of regulatory risk advisers and she will fill the position vacated by Lynda Blackwell in July last year.
The FCA could not confirm a start date for Tennant.
She joined the regulator in 2006 and her 11-year term at the FCA includes a six-month secondment at the Office of the Comptroller of the Currency (OCC).
According to her Linkedin profile, Tennant has managed an analytical team in the central risk function of the regulator which is responsible for undertaking macroeconomic analysis to monitor and identify financial sector and consumer risks.
Part of her role has included analysis on the UK economy and housing market.