Our first paper with some pilot results came out online in August 2011 and is now out in printed form.
This paper shows how good our sampling procedure was, with the vast majority of volunteers having all four grandparents born within 60km of each other.
Depending on definition, about 70% of our volunteers’ grandparents were born in rural areas and we have good coverage of the UK.
Map showing the distribution of “Mean Geographical Position” (MGP) of grandparental birthplaces of the 3646 volunteers for whom there was information for all four grandparents. Dots mark the MPG for individual volunteers.