To expand on the other answers a bit, not everything on .gov.uk is actually ran by GDS, but rather GDS provides governance.
I worked on building out a kubernetes platform for a large Government Department. Once a service passes the initial assessment, they can get assigned control of the sub domain and point it at their own hosting.
I worked on building out a kubernetes platform for a large Government Department. Once a service passes the initial assessment, they can get assigned control of the sub domain and point it at their own hosting.