The status of these population estimates by ethnic group remains that of experimental statistics, as they have not yet been shown to meet the quality criteria for National Statistics. Therefore, whilst these estimates represent the best information currently available at local authority level, they should be used with appropriate caution and awareness of their limitations.
ONS expects to put forward the estimates for assessment for National Statistics status once the estimates and the methodology used to produce them have been quality assured against the results of the 2011 Census.
Bearing in mind the experimental status of these estimates, they indicate that whilst the overall population of the borough increased by 10,400 over the 8-year period 2001-2009, the ‘White British’ population increased by only 1,600. The first time-series graph below shows how the population within each broad ethnic group in the borough is estimated to have changed between 2001 and 2009.

The two broad ethnic groups with the highest rates of growth can be clearly identified as:
- White (non-British or Irish), increasing by 2,500 to reach 5,600; and
- Asian or Asian British, increasing by 2,300 to reach 4,200.
The second time-series graph shows a more detailed breakdown of change within the non-White ethnic groups in the borough.

At 1,200 people, the local Indian population was clearly identified as the largest non-White group at the 2001 Census. Over the period 2001-2009, it is estimated that this group increased by 900 people to reach approximately 2,100 within the borough.
The fastest growing group, however, is shown to be the borough's Chinese population, which increased by 1,100 people from 500 at 2001 to reach a total of 1,600 at 2009.
Similarly, over the same period, and from a low base figure in both cases, the borough's Black African population is estimated to have increased from 300 to 1,300, and the local Pakistani population from 200 to 1,000.