Particulates: 6.8 per cubic metre (should be lower than 2.5 but not amongst the worst offenders

Deaths: 3.9% of deaths attributed to air pollution.

Interestingly, Exeter is only slightly worse than East Devon:

Particulates: 7.4 per cubic metre and 4.2% of deaths.

http://www.telegraph.co.uk/science/2017/10/30/eastbourne-bracing-air-among-polluted-britain/