Men who live in the least deprived parts of Kensington & Chelsea can expect almost a quarter of a century more of good health than their male counterparts in the most deprived part of the borough.
For males at birth, the number of years an individual could expect to live in good health based on current rates - known as healthy life expectancy - differed by an average of 24.6 years between the most and least deprived parts of the borough.
For females at birth, inequality during the same period was 21.2 years. Overall healthy life expectancy in the borough was 67.6 years for males and 69.1 years for females.
The London borough of Newham had the lowest level of health inequality within it for men, at 3.8 years, as well as one of the lowest levels of healthy life expectancy overall at 57.9 years.
For females, Newham had the second lowest level of inequality (3.1 years) and also a low number of years lived in good health (56.8 years).
Inequality in health between areas within Newham is less noteworthy than elsewhere, largely because most of the areas within the borough have a similarly low healthy life expectancy.
For example, among males, out of 21 small areas within Kensington and Chelsea only three had a lower healthy life expectancy than the Newham average of 57.9 years.
Inequality in healthy life expectancy, 2009 to 2013, by upper tier local authority
Wokingham is the local authority with the highest male healthy life expectancy in England
Wokingham, in Berkshire, has the highest healthy life expectancy for men (70.0 years), when local authorities in England are compared in terms of their overall healthy life expectancy.
The borough has the second highest healthy life expectancy for women (70.8 years) as well as a relatively low level of health inequality, 7.1 years between its most and least deprived areas for both men and women. In this case, it is because most areas have good levels of healthy life expectancy.
In contrast to the example of Newham, there are many local authorities in England that are characterised by low overall healthy life expectancies alongside large inequalities between the areas within them.
One example of this is Middlesbrough in the North East. Here the average number of years an individual can expect to live in good health is 58.6 years for males and 60.1 years for females, around 10 to 11 years lower than in Wokingham. The level of inequality between the most and least deprived areas in Middlesbrough is 21.0 years for males and 20.0 for females – only slightly less than in Kensington and Chelsea and around five times larger than in Newham.
The levels of health inequality, described here, are estimated by relating healthy life expectancy in small areas within each local authority, to the level of deprivation in each area, using a statistical model to derive a summary indicator - known as the Slope Index of Inequality. More information on this measure and changes over time in inequalities nationally is available in our full report.
If you want to know the expected level of healthy years in the small area in which you live and the inequality in health that exists across your local authority, put your postcode in our tool below to find out.