Not sure if this is a gem or a turd, but ... names & numbers.... UK:2012: 178706510-Government-Departments-Contact-Emails-Phone-Numbers-Etc.pdf : https://archive.org/details/pdfy-NuG_aq92qSIGmtW5 - More annual reports: https://civilservicecommission.independent.gov.uk/publications/annual-reports/
- Looks like UK SES/Civil Service guidelines: https://civilservicecommission.independent.gov.uk/wp-content/uploads/2012/07/CSC-Annual-Report-2011-12.pdf