Professor Sir Walter Bodmer FRS from the Weatherall Institute, Oxford, explains what we know so far about genetic structure and origins of populations of the British Isles. Part of our special series from the 2019 Galton Institute Symposium - New Light on Old Britons.Presented and produced by Georgia Mills for First Create The Media.More info at GeneticsUnzipped.comFollow us on Twitter @GeneticsUnzipVisit the Galton Institute website to find out more about the society and its work and follow them on Twitter @GaltonInstitute