From their website:
“North Sea Core CIC is an initiative set up in November 2018 in response to the release of core material by energy companies through the relinquishment, abandonment and decommissioning of fields on the UK Continental Shelf. It is recognised that core material provides an incredible resource for understanding the subsurface and it is invaluable to geologists. Rather than seeing this important part of our offshore geoheritage fall into disuse or be discarded, we collect, transform and upcycle core material and make it available to the wider geological community.
All core is donated from company samples, not from material held in the British Geological Survey collection. We provide core for education and science outreach, with considerations made for those facing financial hardship. We also supply to individuals and commercial organisations.”