The usethis::use_mit_licence() function creates a licence that included the name of whoever you specify as the copyright holder e.g. use_mit_license("Crown Copyright (Ministry of Justice)") would produce a licence that looks like: https://github.com/moj-analytical-services/verify/blob/main/LICENSE
I think the copyright holder for work produced by civil servant should be crown copyright not the individual: https://www.nationalarchives.gov.uk/information-management/re-using-public-sector-information/uk-government-licensing-framework/crown-copyright/copyright-assignments/
The
usethis::use_mit_licence()function creates a licence that included the name of whoever you specify as the copyright holder e.g.use_mit_license("Crown Copyright (Ministry of Justice)")would produce a licence that looks like: https://github.com/moj-analytical-services/verify/blob/main/LICENSE