My husband is a contracts manager for an asbestos removal firm. He said if it is asbestos cement (i.e. gray corrugated roof sheets) this does not require an asbestos contractor to remove it however it will still require disposing of properly. Some Council tips have as asbestos facility and if you can transport it there yourself, they will take it free of charge. There are guidelines on the HSE website. Hope this helps. If you are in the North West and ask a contractor to do it, they will charge you in the region of �400-�600 to remove it and dispose of it.