Portuguese emigration to the United Kingdom has decreased by 17% in 2018 compared to 2017. After a maximum of 32,301 entries in 2015, Portuguese emigration to the United Kingdom is already at levels below the ones registere in 2012. This decline began in 2016 and was accompanied by the general movement of immigrants' arrivals in the United Kingdom, which fell by 0.4% in 2016, 17.2% in 2017 and 7.3% in 2018. The acceleration of the reduction of Portuguese emigration to the UK will be mainly due to the fears induced by Brexit.
Link https://sw.stat-xplore.dwp.gov.uk
Cite as Vidigal, Inês (2019), “Portuguese emigration to the UK is the lowest since 2011”, Observatório da Emigração. http://observatorioemigracao.pt/np4EN/6627.html