Half EU migrants 'have left UK' / BBC News, Tuesday, 29 April 2008
http://news.bbc.co.uk/1/hi/uk/7372025.stm
Report Floodgates or turnstiles? Post-EU enlargement migration flows to (and from) the UK http://www.ippr.org.uk/publicationsandreports/publication.asp?id=603
About one million migrants from Eastern Europe have arrived in the UK since 2004 but half of them have already returned home, research suggests. The Institute for Public Policy Research examined the impact on the UK after the EU expanded in 2004 and 2007.