I don't think you should worry about it. I have been reliably told that asbestos is safe until it is disturbed.
Don't disturb it unless you really have to. Knowing it is there is not a concern unless there is damage which allows the dust particles to affect other areas and people. I have also just been reassured that wet asbestos is safe.
It is disturbing the dry asbestos where the problem lies.
Unless you really have to make repairs to the roof or any part near the asbestos, it is best left alone. My house was built in 1971 and at that time almost all houses built had asbestos linings, loft insulation, boiler cupboard linings, etc.
I am CURRENTLY going through a nightmare I never envisaged.
Toward the end of July a stain appeared on the kitchen ceiling. I am disabled and live downstairs in a disabled living extension, so I really didn't know what caused the escape of water. I called the house insurers who sent someone immediately who found a slight crack in the toilet upstairs. By the time it has spread over the kitchen ceiling - and the next room, it had soaked through the MDF in the kitchen cupboards and onto the floor.
A week later the loss adjusters came with workmen who took samples of the ceiling which, after the results came through last month, turned out to be positive for an asbestos sandwich. I was horrified. It has been a traumatic month of waiting. Last week workmen came to take away the toilet and floor in the bathroom. The following day - just this Friday - a technician arrived who explained more about it to me.
He also showed me a photo of the bathroom wall - tiled - showing it was swelling outward and that would have to be removed. There is a shower room next door. I think that wall will have to come down too. He explained that the wet asbestos renders the asbestos safe. It is disturbing the dry which creates a problem, so they cannot just remove the wet ceiling in the two downstairs rooms, because that would disturb the dry part. The whole ceiling will have to be removed in both rooms.
Being a wheelchair user makes it very difficult for me. My lifeline is my computer. The disabled living extension wraps around two sides of the house and I have to access the computer through the kitchen. I had a completely new phone line outside put in, so that creates a problem. I have to work out how I can stay in my very comfortable house while the ceilings are being taken down in two other rooms.
Don't be too eager to make repairs or renovations. I don't think surveyors or sellers of homes have to notify about asbestos, as it is safe unless disturbed.