For countries like Portugal, with limited prospects in terms of employment, one of the solutions involves emigration and the desire of part of the Portuguese people to establish enterprises in other countries, England being one of the most favoured. Taking into account these premises, and in the scope of a broader research on the Portuguese Emigrant Entrepreneurship in Andorra, London, Nice and Monaco, we carried out a questionnaire to 51 Portuguese entrepreneurs living in London, within several economic sectors, between 2013 and 2014. Our main goals were to know the profile of Portuguese immigrant entrepreneurs in London, the reasons for their emigration, the need or opportunity for entrepreneurship, the types and areas of activity of their businesses, the obstacles they had to deal with and the possibility for them to return to Portugal. The novelty of our research lies in the study of the ethnic and economic emigration of Portuguese emigrants in London, a study that was under-researched and under-analysed to this date.