The number of people who migrated to the UK was 512,600 in 2003, compared with 328,400 in 1991. The 2003 figure is nearly double the 1993 figure of 265,100.
The UK's Office of National Statistics figures are based mainly on data from the international passenger survey and 2003 is the latest date available. They show migrancy briefly dropping off in the early 1990s.