Commonwealth Personnel
RB
If there was a medical recommendation your parents /NOK will be transported to UK, or any other non operational location under the DILFOR scheme, if you were ever taken seriously ill, but I think what you say about Comp travel for yourself is correct.
There used to be a scheme known as DOMCOL that helped Foreign & Commonwealth personnel serving in the forces get home every few years to have an extended period of leave, not sure if it still applies or could be used with Comp Travel.
TT