Deutsche Bank chief executive Christian Sewing said that all 22,000 client-facing staff at the German lender need to be versed in ESG, but admitted that the bank needs more specialists in order to prepare for the coming boom in the sector.

Sewing said he is receiving requests from the bank's environmental, social and governance teams for more budget for people, which is "clearly on the table", as the bank has seen a surge in interest from clients across its investment bank and other departments.