Asbestos is a naturally occurring mineral that was widely used in construction in the 20th century. It was used because of its insulating properties, durability, and affordability. Unfortunately, asbestos was also discovered to be carcinogenic, causing lung cancer, mesothelioma, and various other health conditions.

The use of asbestos in construction was banned in the UK in 1999. However, millions of buildings built before its ban still contain asbestos. That's why it's important to undergo an asbestos survey before embarking on any refurbishment or demolition project.