http://www.migrationinformation.org/Feature/display.cfm?id=306
Dhananjayan Sriskandarajah and Francesca Hopwood
"Net immigration to the United Kingdom (UK) has risen dramatically over the last decade. With sustained economic growth and historically low unemployment rates generating demand for migrant workers, large increases in asylum applications during the 1990s, international student numbers growing, and more people reuniting with family members, immigration levels have risen to unprecedented levels. "