Soundcloud is kind of an anomaly in a way. I like it, but it seems like a lot of well known artists don't really take it seriously and it's a bit random.
Seems like artists in DnB are more reliant on DJ play, their own DJ gigs and getting on big YT channels like UKF etc.
It's definitely better than it was when I started producing though, back then you didn't really get any coverage unless you were in 'the big DJ friend club' or maybe through pirate stations.
I've finally overcome the issues I was having with engineering and so I'll be putting a few tracks up online soon, so I get to go through all this myself. lol. I think I'm going to focus on working with established DJs that I know to get tracks to them that they will play and go from there. Just working on 3 demos to show what I can do atm though.
Did you ever reach out to labels to work with them?