Asbestos is a group of six naturally occurring fibrous minerals that were widely used in building materials in the UK until the late 1990s. Used for its heat-resistant properties, asbestos was commonly found in insulation, roofing, flooring, and other construction materials. While asbestos is not harmful when it's undisturbed, it becomes a serious health hazard when the fibers are released into the air and inhaled.

The inhalation of asbestos fibers can lead to serious health conditions, such as lung cancer, mesothelioma, and asbestosis. Asbestos is a silent killer that can take years or even decades to manifest its symptoms. It's estimated that over 5,000 people die each year in the UK due to asbestos exposure.