There are only a few universities in the country that do an undergraduate masters degree. It's 4 years long compared to the normal 3 year degree. The first 18 months are common foundation programme, then you select which branch you do. I am a paeds nurse, and I would have to do a full 3 years to change to adult nursing. Adult nurses, paeds nurses and midwives can work in NICU. I had a friend who did a month in Australia as part of her paeds nursing training and she was told she couldn't do it in NICU as over there only midwives work in NICU. that was 6 years ago so things may have changed but its worth looking into if that's what you want to do.