Bath is known for its historic and period properties, many of which were constructed long before modern building regulations existed. While these buildings have unique character, they can also contain asbestos introduced during later refurbishments and repairs. 

Bristol has a large number of older residential properties, many of which were built or refurbished before asbestos was fully banned in the UK. While asbestos-containing materials are not always dangerous if left undisturbed, problems often arise during renovation, repairs, or general wear and tear.