She will join the challenger bank from CYBG, where she has served for over 20 years.

Debbie currently holds the role of group chief operating officer and executive director at CYBG.

Her appointment follows the announcement earlier this year that Paul Pester would step down from his role following the IT disruption issues that the bank had faced.

Richard Meddings will remain as the group’s executive chairman until Debbie’s arrival, when he will return to his previous role as non-executive chairman. 

Richard said: “When we began the search for a new CEO, we were looking for someone who shared our vision for TSB, who had a strong track record in financial services, and who would inspire TSB Partners to fulfil TSB’s true potential.

“With over two decades of experience, superb retail and SME banking expertise, and a genuinely open and engaging style of leadership, we have found an outstanding new CEO.

“Debbie’s appointment is another step forward against the three priorities we set out in September, namely: completing the work of putting things right for customers; achieving full functionality across all TSB products and services; and appointing the right CEO for the next chapter of TSB. 

“As we look to the new year, TSB can now look forward with renewed ambition.”

Debbie added: “I’ve known and admired TSB for many years and I have huge respect for the values on which TSB has been built.

“A lot of banks talk about creating the right culture, but TSB has it.

“The exciting thing about TSB is just how much potential the bank has to redefine banking to better serve customers and their changing financial needs.

“Thanks to the skill of TSB Partners, the strength of TSB’s network, and the capabilities within the bank to deliver, TSB has all the right ingredients to be the leading challenger bank in the UK.”