In 2006 Heathrow Airport began campaigning for its expansion and the build of a new runway in order to accommodate its growing number of flights. The costly proposal was, and still is, met with anger and protest by environmentalists, politicians and more adamantly, by the neighbourhoods facing destruction. Consequently, activists have defended and occupied the site of the proposed third runway for the past five years. The following article investigates the spatial politics of resistance within Grow Heathrow, a space propagating the need for community-led activism and D.I.Y. architecture.