Did you look at the price list ?

Standard extract – no personal confidential data £9,565

Alternatively for just under £1,000 more :

Standard extract – containing personal confidential data £10,453

They're specifically enticing people to purchase the confidental data version since it is only 10% extra to get all the juicy information.

Trouble connecting people to their parents, siblings, children, (ex)partners ? Simple, they'll even do that for you - look at Patient Tracking, Cohort Event Notification (!) etc.

The value of this data to marketers (e.g. health insurance, private hospitals - which do exist in the UK, etc. makes the price list charges trivial and insignificant to just slurp up everything they can and start targeting people). Want someone to try and sell you cancer insurance 2 weeks after your mother dies of breast cancer ? Cohort event notification report makes this simple.

Remember the toothpaste does not go back into the tube - once the data is sold, it's basically wild and free for all sorts of use and abuse. You have absolutely no guarantee it will only be used by benign 'good actors'.

edit:spelling