Thanks Nimish for your reply. I just found a similar question in the forum where the answer was that ID1 was not necessary because the probate acts as sufficient identification.  Is this still the case?https://customerhelp.landregistry.gov.uk/forums/general-info-and-guidance/4864c215-518c-ed11-a81c-002248407559#3d432e1b-518c-ed11-81ad-0022481b5022