Dedicated volunteers have been awarded for their role in protecting Gunnersbury Triangle in Chiswick for more than three decades.

The volunteers - including Margaret Berger, Jan Hewlett, Peter Leon, Anne Mayo, Christine Leon, Andy Brown, Emma Robertshaw and Ian Alexander - scooped top prize at the London RE:LEAF Tree and Woodland Awards on May 26.

They were awarded for their role in carrying out activities including site management, organising open days, species surveys, biodiversity monitoring, and supporting Trust staff on educational work and fundraising.

Volunteers, who are part of the Gunnersbury Triangle Steering Group, were given the Acorn Award, in London City Hall, which is given to people who "made a particular contribution to promoting or conserving trees".

Thanks to the campaign of volunteers in 1983 Gunnersbury Triangle, a London Wildlife Trust nature reserve, avoided a controversial woodland being built on it.

Gordon Scorer, chief executive of London Wildlife Trust, said: "The group’s long-standing dedication to the Triangle is remarkable and they fully deserve this award.

"By ensuring the reserve remains a local community asset, playing an important role in the narrative of London’s nature conservation history, the volunteers should be applauded.

"It is clear that without their energy and passion Gunnersbury Triangle wouldn’t be here today."