Two prenatal appointments at different hospitals

So basically I actually refereed myself to a close hospital, homerton, here which has also average reputation and a week later when I didn't hear from them I then referred myself to a St thomas which has quite good repo.

Now I've just found out that I've got two appointments with both hospitals. And again it's my first time having a baby so I'm completely new to this.

I was thinking of actually attending homerton and two weeks after the start Thomas and in case what I am hoping, if st thomas is more satisfactory I stick to it otherwise I could always go back to homerton and cancel with St thomas. However I don't know whether this could become an issue or if I attend the first appointment the 2nd one at the other hospital will automatically be cancelled.

Any suggestions? I just wanna choose the right hospital