Asbestos is a naturally occurring mineral that was widely used in construction and other industries until the late 20th century. It was valued for its strength, durability, and heat resistance, and was commonly found in building materials such as insulation, cement, flooring, roofing, and pipes.

However, asbestos is also a known carcinogen - a substance that can cause cancer when inhaled or ingested. When asbestos-containing materials are disturbed or damaged, they release microscopic fibers into the air, which can be inhaled by anyone in the vicinity. These fibers can accumulate in the lungs over time and cause serious health problems, including lung cancer, mesothelioma, and asbestosis.

As a result, the use of asbestos has been severely restricted or banned in many countries, including the UK. However, many buildings constructed before the 1990s may still contain asbestos, particularly in areas like Chelwood Gate with older properties.

Removing asbestos safely and effectively requires specialized expertise, training, and equipment. It also involves complying with legal requirements and guidelines set by regulatory bodies like the Health and Safety Executive (HSE) and the Control of Asbestos Regulations (CAR).