Notify users that register.gov.uk is gone

[R2ZER0]

On lists/schemes that used register.gov.uk e.g. http://org-id.guide/list/GB-LAE it would be helpful for us to write a notice.

Perhaps replace the dead link with links to archives of the old data / service:

• https://www.data.gov.uk/dataset/a8f488fd-eaea-4176-92b0-6d0437b4d121/historical-gov-uk-registers
• https://github.com/openregister/registers-data-archive
• https://webarchive.nationalarchives.gov.uk/ukgwa/20210104110201/https:/www.registers.service.gov.uk/

See also:

• https://dataingovernment.blog.gov.uk/2021/02/18/new-guidance-for-publishing-data/ Though I can't find any follow-up mentioned in the comment