There are around 15 families who live permanently in self-made homes at the community garden site in Sipson and at least 100 others who regularly work at the site.
Eddie has been a resident for a year.
He would not reveal his surname or age, but was happy to explain how he became part of the Grow Heathrow family.
He joined after hearing about it through word of mouth.
"I'm now friends with them, I love the people who love here, this is my livelihood, it gives me purpose," he said.
"A lot of people have found they take great fulfillment out of skills we promote here; growing food, bike mechanics, communal living, learning to live with other people - all those different elements.
"The whole value system of this place is our intrinsic goal of community cooperation as opposed to intrinsic goals of individualism and financial gain."
The third runway campaigners and the Grow Heathrow supporters are not isolated to one political party.
"There's a huge political spectrum - right and left - that is against the third runway," explained Eddie.
"It's important that the Government and authorities don't paint us with a brush of radical squatters or other negative stereotypes.
"This project has within it other groups which you can't paint with that brush. For example, Hillingdon Friends of the Earth and campaign groups against the third runway such as HACAN.
"We have common ideas and motivation with them."
John Stewart from HACAN did a talk at the site yesterday (Thursday, August 14), explaining the successes of the campaign group so far.
"The government was unsuccessful in making the third runway happen," said Eddie.
"John said that's the first time the aviation industry has had such a crushing blow.
"That was a result of alliance and coalition between direct action and more formal campaign groups, plus using your civil rights to lobby and campaign where you can.
"That is visible in the demonstration here today.
"That coalition is very effective. It is politically very difficult and risky for them [the Government] to go ahead with this proposal."
The group wants "peaceful resistance" to the eviction threat.
Sipson resident Tracy Howard, 40, and her daughter Olivia Howard, 15, D-locked themselves to the site entrance by their neck as they sang along to songs coming from the other side of the gates.
As of 11.30am there was no sign of police or bailiffs.
Land owner Imran Malik made a brief appearance but refused to engage in conversation with squatters or media.