Info On Mumps Vaccine From British National Formulary 1985 Edition, by British Medical Association

From page 385:

SINCE MUMPS AND IT’S COMPLICATIONS ARE VERY RARELY SERIOUS, THERE IS LITTLE INDICATION FOR ROUTINE USE OF A MUMPS VACCINE.

VAN UK’S Comment: This same paragraph was repeated in the 1986 edition and then just 2 years later they introduced MMR, a vaccine they knew was not medically necessary.