Activists aiming to protect five mature trees in Highgate watched as three were "senselessly" destroyed.
Two sycamore trees and a copper beech tree were chopped down in Townsend Yard on August 30 following a 13 day standoff with Haringey Tree Protectors (HTP).
The trees were felled by developer Sean Meadows as part of construction works to build seven mews houses.
More than 10 police officers attended according to former Liberal Democrat Highgate councillor Clive Carter who watched the proceedings.
Two Lime trees alongside Shepherd's Cottage, which shares a boundary with the development, were preserved after group members sat in the garden, with permission from home owner Jane Hill.
Jane, who fears her 17th century home will be damaged by planned construction, said: "There's no trespassing in my garden so we are going to set up a rota to guard them. Those Limes would have been gone if it it wasn't for HTP. They've given me incredible support."
Jane Leggett of HTP said: "I'm absolutely devastated by the senseless loss of these trees. It's part of what's going on full scale in Haringey."
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