I have a friend whose husband has asbestosis which he got whilst working as a maintenance fitter for CEGB Huncoat power station. It was a long battle for compen but he eventually got it, helped by the fact that he had had no other employer and never smoked cigarettes.
There has been a recent court ruling which will help with the battle for compen
Landmark ruling for asbestos victims - Health News, Health & Wellbeing - The Independent