"They are also not eligible for any of the other TLDs managed by Afnic.
"However, anyone who, despite having a seat on the island, had already registered a .fr domain before January 1, 2021, may keep it and renew it as often as desired."
France's AFNIC has specified that there are currently around 34,000 .fr domain names registered before January 1, 2021, by holders residing in the United Kingdom.
The organisation added: "However, new registrations are not permitted if the potential domain owner is based in Great Britain.
France has banned Britons from using .fr domain name (Image: GETTY)
Boris Johnson negotiated Brexit with Ursula von der Leyen (Image: GETTY)