Figure 4: Short-term international migration flows for employment and work (other) for 3 to 12 months, England and Wales, year ending June 2004 to year ending June 2015
Source: International Passenger Survey (IPS), Office for National Statistics
Estimates of short-term international migration flows are based on a sample survey. As a result, small estimates are subject to a greater degree of uncertainty. Therefore, some of the apparent changes shown in Figure 4 could be due to random variability between the samples selected in each year.