Brent's Junior Citizenship Scheme took place over three weeks at Bridge Park Community Centre and Kingsbury Temple.
This year, the council's public health team as part of Brent's wider slash sugar campaign, devised a special interactive workshop around being 'sugar smart'.
Cllr Krupesh Hirani, Cabinet Member for Community Wellbeing said: "It is alarming to think that the average daily sugar intake for children is three times higher than the amount recommended by health professionals. The problem is that too much sugar means extra calories, which in turn can lead to stored fat in the body, causing conditions like obesity, heart disease, cancer and type 2 diabetes. It is also directly linked to tooth decay.
"It's important that educate our young citizens so they can make smarter choices when it comes to sugar."
The scheme, which involved Brent Council, Brent Metropolitan Police, the fire service, Addaction, and Transport for London, aims to teach children to be streetwise and involved approximately 2,853 children from 46 primary schools.
For more information on reducing your sugar intake and other ways to improve your health and well-being visit www.brent.gov.uk and search 'Healthy Living'.