The gilded panels, chandeliers and frescoed high ceilings of JP Morgan’s offices in Paris seem more Marie Antoinette than modern finance. Its balconies have priceless views across the Place Vendôme, decadent home to the flagship stores of Van Cleef & Arpels, Dior and Chanel.

Yet when hundreds of JP Morgan bankers were told they had to move here from London after Brexit, the news did not go down well. Paris was seen as a financial backwater, lacking London’s vibrancy, good schools and international flavour.

In a quiet office in this palace of a building sits Matthieu Wiltz, who started his career with the bank in Paris in 2000 but spent most of his 23-year career in London, rising to his position as JP Morgan’s head