As London's population grows and land is needed for high density housing and roads, wild areas are shrinking. But even tiny corners can become homes for wildlife, providing dot-to-dot connections between larger green spaces for flying insects, birds and foraging mammals like hedgehogs.

This triangle on the A406 North Circular can be paced out in twenty seconds. In a ten minute visit I found birdsfoot trefoil, evening primrose, cranesbill, at least three grasses, willow herb, clover, hedge mustard, thistle, hornbeam and hazel trees, buddleia, hoverflies, bumble bees, and a ladybird. We have to thank a light-touch mowing regime for this kind of rich mix, allowing plants to grow, flower and seed and keeping the strimmers away from young trees. This is not a place to have a picnic and there is no escape from the roar and fumes of traffic. But for pollinating insects and other wild visitors it's a compact home in a highly desirable area.