Please click the following links:
https://departmentfortransportuk.sharepoint.com/sites/intranet-leavingdft/SitePages/ill-health-retirement.aspx?web=1
https://www.civilservicepensionscheme.org.uk/memberhub/kbarticle/?id=KA-01218
If any links do not work, please contact HRadvice@dft.gov.uk