Arun ranked as least healthy district in West Sussex and 260th overall in the UK

Meanwhile, Chichester was ranked the second healthiest town in the UK, beaten only by the Forest of Dean.

Babylon Health surveyed more than 38,000 users of its Healthcheck app across the UK.

The survey looked at three aspects of health – diet, smoking and exercise – and assigned an overall score out of 100 to each district in the UK.

The nine metrics used to calculate the score were as follows:

- Diet: alcohol units per week; drinking (times per week); fruit and veg portions per day

- Smoking: cigarettes per day; percentage of smokers; percentage of quitters versus smokers