Just been to see the " Verwig" Cardigan White Stork..
The bird has a (likely 4) alpha numeric code on a yellow darvic ring... this ring is on the left tibia..
I don't know the " previous " White Stork details ...
Update - the ring (CVO3) - the White Stork is part of the Cove Valley, Devon reintroduction ( not registered on cr birding)
Thanks to Mark Waldron for getting the ring details..