Blood banks contacts

[Apple12]

Hello to you all,
I know this has been done before but can't find anything recently or on the internet.
I'm looking on behalf of a friend who has a horse unsuitable to ridden work and would like to donate him to a blood bank. I'm struggling to find any contact details for the actual farms, only found websites that sell serum. The horse is based in the midlands and I've heard there's on MK/bedford way but can't find any contact details. Any help or experience of these blood banks would be greatly appreciated, looking for any in the UK but the closer the better.
Thank you, this wasn't a decision made easily.

 

[spider]

https://www.tcsbiosciences.co.uk/donor_horse_serum.php
This one is in Botolph Claydon in Buckinghamshire. No personal experience but have seen the horses grazing in the fields and they look well cared for. I believe they only take in horses a couple of times a year and there is a waiting list but that is just what I've heard people say.