Gunnersbury Triangle

Gunnersbury Triangle

Photo credit: James Cracknell 

Gunnersbury Triangle

Gunnersbury Triangle credit James Cracknell

Gunnersbury Triangle nature reserve in the snow

Credit Netty Ribeaux

Gunnersbury Triangle

A green oasis created by intersecting railway lines, close to Chiswick Park Station, saved from development and managed for wildlife and people.


Bollo Lane
W4 5LN
A static map of Gunnersbury Triangle

Know before you go

3 hectares

Parking information

There is neighbouring street parking available.


The entrance is across the road from Chiswick Park Station (District line). Bus number 440 also stops by the entrance, while services, 237, 267, 110 and H91 stop on nearby Chiswick High Road.

There are gentle sloping footpaths made from natural material, as well as anti-slip decked walkways, but the terrain can be uneven in other places and because there are steep steps wheelchair users will not be able to access all areas of the reserve.


Assistance dogs only

When to visit

Opening times

Open at all times

Please note: toilets are currently closed

Best time to visit

April to November

About the reserve

This wet woodland nature reserve was saved from development in the early 1980s and then enhanced by the creation of ponds and acid grassland areas. Birds and small mammals take advantage of the sheltered birch and willow while walkways and footpaths help guide visitors around this wild oasis in Chiswick.   

History of Gunnersbury Triangle

Abandoned allotments on railway land which had grown into woodland were at risk of development in 1981. But a campaign led by local people, supported by London Wildlife Trust and the (former) Greater London Council, ensured the area between the railway tracks was protected at a landmark planning inquiry in 1983. The land was given to Hounslow Council, and the Trust invited to manage it as a nature reserve. After work to make it more accessible for visitors, the site opened to the public in 1985. Both Hounslow and Ealing councils, on whose boundary the site sits, later designated the Triangle as a Local Nature Reserve.  

Status of Gunnersbury Triangle

Site of Metropolitan Importance, Local Nature Reserve  

Volunteer with Gunnersbury Triangle's team

Volunteering at Gunnersbury Triangle will resume in the autumn. Please email Hadi El Ali to register your interest:

Get involved at Gunnersbury Triangle   

Book a school trip to Gunnersbury Triangle

Record species you've spotted at Gunnersbury Triangle

Contact us