The graph shows the reasons why people emigrate to the UK and the most common reason was a prospect of a definite job or looking for work. The second most common reason why people entered the UK was for formal study. Immigrants expect to get a higher income from work in the UK than in their source country, the source country being the country they emigrate from. The cost benefit analysis of this is that people decide to move when the benefits are greater than the costs. Benefits can include things like improved standard of living and higher wages, on the other hand there are costs such as the time and effort it takes to learn a new language and psychic costs like the stress of moving.

The graph shows that people often accompany others and they migrate together and this is called family migration. When a family migrates economic theory states that they decide to move when there are benefits to the whole family and not individuals.