"To big international businesses I therefore say 'Welcome in Paris!' [sic] Come and invest in France!" an excited Valls told Le Parisien newspaper.
"We know that groups based in the City are thinking of leaving for Dublin, Amsterdam, Frankfort and Paris," he sent on. "We are working on schemes that could allow us to improve our attractiveness. I'm especially thinking of taxation and expatriates' status."
On Thursday President François Hollande said he wanted to make France more attractive to City businesses tempted to decamp when Brexit goes ahead.
One challenge to France in attracting international financiers is that only 39 percent of French people are fluent in English - and the prime minister and president are not among them - compared to 56 percent of Luxemburgers and 90 percent of Dutch.