A new "health atlas" reveals striking differences in the risk of some diseases found in various parts of England and Wales.
The website - launched today by the Small Area Health Statistics Unit at Imperial College London - allows members of the public to search across the country or by postcode for the relative distribution of conditions such as heart disease, various forms of cancer as well as the impact from environmental hazards such as air pollution.
Here are some examples (dark brown indicates highest risk and purple indicates lowest risk):
Coronary heart disease (CHD) was biggest killer of people in England and Wales, leading to approximately 71,500 deaths in 2009 alone.
According to the data, the highest risks of CHD could be found in the north of England and south Wales.
While liver cancer is relatively rare in the UK, it is also usually fatal. Instances of the disease are often thought to be related to alcohol misuse or viral infection such as Hepatitis B or C.
There were approximately 3,500 cases diagnosed and 3,200 deaths from the disease in England and Wales in 2009, with men making up close to two-thirds of instances in both cases.
According to the data, there is a greater overall risk in the north-east and parts of south Wales, though men in London and Hampshire are also shown to be more at risk.
Lung cancer kills around 30,000 people a year in England and Wales, statistics show.
The health atlas indicates that people most at risk of the disease live in conurbations - joined up areas of urban towns or cities such as Greater London - or industrial areas such as the north-west and north-east.
This is thought to be due to smoking patterns in urban areas, as well as occupation risks such as asbestos exposure and, to a lesser extent, pollution.
The map above shows levels of particulate matter pollution, which can be be natural or man-made and is a complex mixture of liquid and solid, organic and inorganic substances in the atmosphere.
According the the Atlas, the highest levels were in cities and urban areas where transport is heaviest and an important determinant of outdoor air pollution concentrations.
This map shows the risk among women of developing breast cancer, the UK's most common type of cancer, by region. Those at the highest risk according to the map are living in North Wales and parts of Southern England.
Skin Cancer (malignant melanoma)
The most dangerous form of skin cancer in the UK, malignant melanoma, is of greatest threat to those living in the South West of England. The cancer, which is on the rise across the UK with rates increasing five fold since the mid-1970's, is least likely to affect those living in Lincolnshire and South Eastern England.
The maps used Office for National Statistics data from a 25-year period, and there are separate maps for men and women. The fourteen conditions mapped were: