Are UK or European SIM cards exempt from roaming charges in Malta with CoreESIM?

The applicability of roaming charges in Malta for UK or European SIM cards varies. As an EU member state, Malta falls under the 'Roam Like at Home' regulation for most EU citizens. However, post-Brexit, many UK mobile network operators have reintroduced roaming fees. For travelers originating from the United States, Turkey, various Asian nations, or the post-Brexit UK, utilizing a CoreESIM plan specifically for Malta is often the most cost-effective and transparent solution, mitigating unexpected roaming expenses.