Choose a small evergreen such as Magnolia Grandiflora 'delavyi' Our Magnolia Grandiflora is a good block against a harsh street lamp. The tree in front of it is Liquidambar, which – even in full leaf – will never block harsh light.
My favourite privacy tree - multi-stemmed silver birches for privacy
The best tips when choosing perfect-for-privacy garden trees. Which trees to choose, where to plant them and how to make your garden private.