Smokers are being encouraged to quit during the month of Stoptober.
Croydon Health Services is supporting the 28 day challenge and urging smokers in Croydon to take part in the first ever mass quit attempt.
Stoptober is a government campaign to help smokers to quit for a month; research shows those who manage to stop smoking for that length of time are more likely not to start again.
Consultant Dr Siva said: "We know giving up smoking can be very difficult, but it is the single best thing you can do to improve your health.
"As a chest consultant I see a lot of patients with lung cancer and Chronic Obstructive Pulmonary Disease (COPD), who wish they had stopped smoking earlier."
Throughout the 28-day quitting challenge, there will be support from health teams with advice and tips to help you meet the challenge.
Dr Ruth Clery, GP Champion in Smoking Cessation, Woodside Group Practice said: "There are plenty of smoking cessation advisers in the community to help support a quit attempt - in most GP surgeries, community pharmacies and drop in services in the High Street.
"Smoking impacts on people's health and families in so many ways; this month is an excellent opportunity to improve your physical and financial health."