Have you seen this thread?
viewtopic.php?f=6&t=126514
Very discouraging...
I'm glad you asked this question as I was about to ask the same. My son has very well managed SEN and is very academically able so I've also been thinking of Emanuel but have heard some awful stories. This thread has made me feel sad...
I have a friend who tried to apply there with her older son with SEN and the admission people were quite awful. It was the only school that wouldn't give him extra time (out of 5 he applied to), for some unexplained reason (he "didn't meet their criteria", despite NHS consultant diagnosis?) And the email announcing this was ended not by "however, we wish him best of luck". No, it was ended by "would you like to withdraw your application?".
This thread has some current parents commenting but I would also love to hear more.