Asbestos is a naturally occurring mineral that was extensively used in building materials in the UK until the 1980s. It was popular due to its heat-resistant properties, flexibility, and strength. However, over time, studies have shown that asbestos is a significant health hazard. Inhalation of asbestos fibres can lead to serious lung diseases like mesothelioma and lung cancer.

Due to its widespread use in the UK, many older buildings still contain asbestos. As long as the asbestos is in good condition and not disturbed, it is generally safe. However, if it is damaged or disturbed, it can release fibres into the air, causing serious health issues.