It makes sense for the communicated advice to be in favour of vaccination, since the government has the entire population to think about, including the old, immunodepressed, etc and other factors in their calculation like cost and benefit analyses.
As a parent, I do what is best for my child. Period.
What is best for my DD is to have rubella in her own time. She will be tested before she turns 18, whereupon she can have the vaccine if she is not already immune.
DS had rubella but even if he is not immune, that's ok. I don't see the point of vaccinating a boy against one of the mildest diseases known to man. He will be tested for mumps when he starts primary school (age 6). If he is not immune, he can have the vaccine at that point.
Both DC have had measles single vaccines.
They have not had MMR because I don't see why my babies need to take even the smallest risk if it is not absolutely necessary.
If anyone would like to argue that the above is not in the best interest of my DC, I'd love to hear her reasoning.