Depending on the materials and type of work being done you may need to use an HSE-licensed asbestos contractor. If this is not needed you should use a contractor who is trained to deal with asbestos. This tool can help you decide which you need:
See link on right for List of licensed contractors
Licensed contractors need you to provide certain facilities
The Construction (Design and Management) Regulations (CDM) (See right) apply, with a 14-day notification period before work can begin.
Employ a contractor who is trained to work with asbestos and should use methods like those in 'Asbestos essentials'. (See right)