Posted: 19/09/2016 at 16:29
It looks like a privet hedge. I think the dead patches are due to anthracnose or twig blight. This is worse in damp weather.
In privets, the disease is most often caused by the fungus Glomerella cingulata. Anthracnose in existing privets is discouraged by removing and destroying all affected wood and foliage, including foliage that falls on the ground, and thinning shrubs during winter months to improve air circulation. Replace ruined shrubs with anthracnose-resistant privets such as amur (L. amurense), ibota (L. obtusifolium), regal (L. obtusifolium “Regelianum”) or California privet (Ligustrum ovalifolium Hassk).