Dump below submitted.
MKB20_v68_The_World's_End_A1BB
I actually found THEWORLDSEND_UPK2 in the latest keydb.cfg,
yet somehow MakeMKV just said The volume key is unknown for this disc - video can't be decrypted.
May need some help here, thanks very much!
Dump submitted for The World's End
Re: Dump submitted for The World's End
Could you also provide your dump here please, either as an attachment or as a download link? Then maybe The Powers That KEYDB could examine it too.
There are several entries for UHD "The World's End" in KEYDB, so if KEYDB doesn't help you it will be because either your disk doesn't match any of them, or because the entry it matches doesn't yet have a VUK ("| V |" field). Your TGZ dump file could help fix that...