I had my DD at Kingston last year and, though I have no experience of other Maternity Units, Kingston was fab.
Antenatally at bit annoying in that you often have to wait around for appointments and administratively they can be quite dreadful, but the care I recieved was exceptional.
I had a long, hard labour; baby in OP, forceps, retained placenta but consider it such a positive experience, largely due to the midwives professionalism and genuine care.
I didn't really want to go home! I had lots of help afterwards establishing bf, which was really important to me and did not come naturally...
One other slight irritation was that they were a bit lax in remembering my meds postnatally so I had to keep getting up in the middle of the night to go searching for my medication. But frankly, I was wake anyway!
The unit is very popular and if you do decide to go there, you must try to book ASAP. My cousin left it too late and, despite living in Kingston, was turned away.
Congratulations and good luck!