Individual behaviour could also play a crucial role in reducing greenhouse gas emissions. This research explored the impact a range of behaviour changes across mobility, food, heating, leisure, and waste would have on Greenhouse Gas emissions. The results show that individuals’ moderate to rigorous behaviour change in the EU could reduce per capita carbon footprint by 6-16%. Three behavioural profiles were used to estimate emission impact from changes in behaviour: Enthusiast, Conscious and Convenient profiles. The benefits from behaviour change would be significant emission reductions and a variety of co-benefits for public health, land use, and regional ecology.