When applying for insurance, will I have to tell an insurer about additional screening or treatment I receive as part of my routine care, as a result of a genetic test taken through research that indicated an increased risk of ill-health?

Yes, if this information is requested on the application form. The application form will typically ask you for information relating to any screening or preventative treatments (including risk reduction surgery) you have received. These questions must be answered honestly and accurately, even if these relate to a condition or predisposition that is discovered through a research project.