I have had two very good birth experiences at the Homerton, but have heard some dodgy stories as well, although none as bad as lanismum's.
I was induced first time round due to cholestasis and although this wasn't a pleasant experience, it was no fault of the midwives or nurses. Second time round was an elective CS for my id twins and although we were kept waiting most of the day, it was ultimately a very good experience and the theatre staff couldn't have been kinder or more helpful.
They are obviously rushed off their feet on the ward, but if you keep buzzing eventually they'll come to you. I think I was lucky that my twins weren't my first babies, otherwise I might have felt that they didn't give me enough help, but as it was, they came when I called (they'd given me a side room) and were as helpful as they could be, although their twin experience was a bit lacking!
Antenatal care can be a bit hit and miss, but both times I have ended up seeing consultants rather than midwives so can't comment much, except to say that whoever you're seeing, be prepared for a long wait!!
Oh and the food is awful (probably like most hospitals) so get your OH to bring you lots of supplies. I thought visiting time was ok - 8am to 1pm for partners, then 3pm to 8.30 for everyone else...partners can stay till 9.30, but mine was never thrown out. Our first child was born at about 9 o'clock, and by the time we were settled back on the ward and had stared at her in wonderment for a while, he didn't leave till about 3.30am!!
Sorry, I've rambled, but hope to have helped a bit.