Is Calais Part Of The UK?

Is Calais Part Of The UK? Calais Calés (Picard) Region Hauts-de-France Department Pas-de-Calais Arrondissement Calais Canton Calais-1, 2 and 3 When did Britain lose Calais? After Britain lost Calais in 1558, Queen Mary declared: “When I am dead and opened, you shall find Calais lying in my heart.” Why did England lose Calais? Queen Mary