The first phase will see The Crown Estate create a green corridor across its holdings in Regent Street and St James's (a total of 8m sqft of commercial real estate), linking Regent's Park and St James's Park.
More than 1ha of new green space will be created, equivalent to one and a third times the size of the football pitch at Wembley Stadium. It will integrate gardens at street level and on rooftops, as well as the installation of bird and bat boxes, beehives and green walls.
The project will eventually create an extensive network of green stepping stones which form connections between the large areas of parkland which are already key natural features of the West End.
Organisers say the project is the first city centre ecology project worldwide to be conceived and driven forward by an industry partnership of this sort
It is being supported by the Mayor of London and the London Wildlife Trust, and engineering consultancy Arup are also providing technical advice and support.
The Crown Estate's James Cooksey said: "With the trend towards urbanisation continuing across the world, it's important for big property owners, businesses, government and charities to consider carefully their impact on plants, habitats and wildlife in major cities.
"That's why we've launched the Wild West End. Along with our partners, we're seeking to ensure that the millions of shoppers, workers and tourists that come to the West End's densely packed urban environment each week, benefit from greater biodiversity by making space for the plants, birds and bees that form a crucial part of the ecosystem in London."