Thanks for your time and detailed answers , I don’t no why I’m thinking it was asbestos insulation board I’m sure th plasterer would have know and wouldn’t of smashed homes in it if it was asbestos , i think it’s because the ceiling was just boarded it had never been plastered , it just had a weird paint on it like a chalky paint I think distemper and then a textured pattern on top . I think I thought it was asbestos board because it wasn’t plastered and I just didn’t exspect a plastered board just to be paint with a textured paint to be the finished ceiling I though all ceiling would be plastered or am I wrong