Ranking is essentially a nonsense - and at this level of University you really do not need to waste brain space on it.
At postgrad level, other Unis do not actually care where you did you first degree, and neither do employers.
If the course/Uni at Newcastle feels right then go for it. That is important. Remember that anyone can be totally miserable at a Uni and hate the course just because they were blinded by marketing nonsense, and didnt look properly at the other stuff.