Hiya pinkfizz...
My knowledge of how the system work is very sketchy to say the least but I always understood it that if you were married then no, the man doesn't have to be there. However if you're not married then yes the partner has to be there.
from what twinx has said it does appear that partner number 2 was willing to be named as the father, though God only knows why.
I'm willing to bet that twinx is now bitterly regretting this act of silliness, I just hope that she can sort it out for the babies sake- imagine the confusion when he/she is older!!!