Strange
Went to a lecture from this Project at a New Scientist event in London
The data collected by this project is almost exclusively from families suffering from genetically inherited illnesses, and you get included via referral by a consultant, so while it might be of interest to foreign intelligence services, (because no data is worthless), it's probably of more value to big pharma.
As far as I'm aware the data is anonymized but I guess that doesn't matter, such a large sample would have a lot of value to some companies in this sphere.