Royal Bank of Scotland (RBS) has said that its finance director Nathan Bostock has resigned after just 10 weeks in the role.

"The Royal Bank of Scotland Group can confirm that Nathan Bostock has this evening informed the board of his intention to resign from his role as group finance director. His formal resignation is expected soon, but he will remain in his position to oversee an orderly handover of his responsibilities," RBS said in a statement.

Bostock, who assumed the role on October 1, is set to join Santander UK as new deputy chief executive, replacing Ana Botin.

However, Bostock’s contract with RBS includes a 12-month notice period, meaning he may have to remain with the bank for some time until a successor is found.

Previously, Bostock has spent 10 years with RBS in several roles, including COO of treasury and capital markets and head of restructuring and risk at the bank.