Asbestos is a naturally occurring mineral that was widely used in the construction industry in the 20th century due to its durability, heat resistance, and insulating properties. However, it was banned in the UK in 1999 after decades of use because of its link to lung cancer, asbestosis, and mesothelioma.

Asbestos can still be found in many older buildings in the UK, such as schools, hospitals, and homes. It can be present in many different materials, including insulation, floor tiles, pipe insulation, and cement.