I had DD in Croydon (CUH/Mayday), albeit 5 years ago.
The antenatal care was great, really lovely midwives etc. I was under a consultant for PCOS and had regular appointments for various things, including scans. Everything was fine with that. The only problem was the waiting at the hospital! Every time we went, our appointment would be running at least 45mins late. That's true of a lot of hospitals, but CUH antenatal unit was unbearably hot and stuffy, and so tiny. Maybe it's changed now.
During my labour the staff were okay. The midwives didn't really talk to me that much, but it was a long labour with not much happening for ages. I ended up with an episiotomy and the doctor didn't have a great bedside manner, but it was a bit of an emergency and she might've just been being professional and acting quickly. She told me I couldn't use my epidural button when I wanted it for the episiotomy, though. Another doctor told me she was wrong to say that, and I was so upset about it.
And then the maternity ward... It was just as unpleasant as most seem to be! I was desperate to go home but they kept "forgetting" about us, according to one midwife. We ended up in a semi private room with one other couple, which was the best thing about it.
4 years later I had DS at East Surrey and the experience was a bit better, but the maternity ward was ten times worse, not helped by it being July rather than March, and there only being one fan between six beds...
Sorry for the essay. Hope it goes well for you OP.