Environmental protesters have completed their eighth consecutive day of protesting at the HS2 site in Harvil Road.
The anti-HS2 campaigners are led by Sarah Green, 62, who was twice evicted from the site in Harefield where HS2 Ltd is preparing to build the high speed rail line.
A sit-in underneath a digger in the field in early October lasted three days, while a second attempt to stop work saw Sarah and one other activist chain themselves to trees in the area.
Hundreds of trees have been felled using powers given to the company by the HS2 hybrid bill, passed by parliament earlier this year.
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But the protesters argue the bill does not give them the power to carry out the work without first getting planning permission from the local authorities.
The environmentalists argue that the destruction of the habitats is illegal and that protected species including bats and badgers live in the grounds that are being cleared.
Sarah, who is a member of the local Green Party , said: “HS2 Limited and their contractors need to know that we are not going anywhere.
"Now that HS2 have started their enabling works, they have their sights set on forest clearance and wetland drainage in 300 acres of woodland in west London.
"That only means we are going to step up our protests, not shy away.
"Their plans would alter the natural balance of the environment, of our air, water and habitats. It cannot be allowed to happen.”
The protesters have been present at a designated site in Harvil Road since Monday October 16.
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