Pro-expansion group Back Heathrow have passed 100,000 electronic signatures of support.
The group, backed by the Airport, started collecting supporters for expansion in 2013, and have now had more than 100,000 people sign up on its website.
They say this shows the significant local support for expansion of the Airport, and contrast it with the news that just 126 people in Hounslow, Hillingdon, and Ealing made complaints to the Airport about noise in the first three months of 2015.
