SEF is an abbreviation for the Portuguese Servico de Estrangeiros e Forenteiras, which translates at the Immigration and Borders Service. It is the SEF who grant visas and enforce immigration and asylum laws across Portugal. The SEF is a police-style service and is integrated into the country’s Ministry of Internal Affairs. The SEF have offices in most major Portuguese towns and cities, where those resident in the country under a valid visa can seek advice and support as required.