Last year, 2018, the World Health Organisation (W.H.O.) issued new guidelines for noise across Europe. its key conclusions are that current government policies and targets are inadequate and out of date and that new targets need to be set. The W.H.O. recommends tough new limits on aircraft noise both at day and at night. Affected communities should be consulted about changes in flight paths and the construction of additional runways. The adverse effects of noise on health, with sleep deprivation leading to lack of concentration, especially among children, and to accidents at people work and while driving, are well established. New evidence has emerged to show that night time noise can cause cardiovascular disease, particularly for those living under flight paths. Even while a person is asleep noise can cause the release of stress hormones, damaging blood vessels, including the coronary arteries. Three quarters of the population in Britain live in areas where night-time safe noise levels are exceeded. So noise really is a major health hazard, even for those not fully aware of it.