Nice on the drums and effects part, but...
I must say, you've been very innovative on the drum patterns and effects in this song, good job; they kept it interesting over the 5 minutes.
I think this track has good potential to be a really bad-ass drum 'n bass song, but there's one thing that really bugged me about it.
I had the constant idea there was some annoying sound through the whole track. After listening a few times I noticed this was just a bunch of very loud, extremely low bass frequencies.
Admitted, the genre's name is drum 'n BASS, but you still need to keep your eye on some meters.
I ran your track through a spectrum analyzer and noticed that even at 20hz, it was constantly peaking around -18db. The peak through the song was -2 db (at this frequency), which is actually far too high.
I suggest cutting off the bass under 40Hz, as those are pretty low frequencies already. Such frequencies (the more at this volume) make your mix very muddy, and kind of noisy.
Perhaps it'd be a good idea to try and make an all new bass, located at slightly higher frequencies. Don't get me wrong, it's a good thing to dive to the really low (sub) frequecies regularly, but you don't want to have it as a constant bass around there.
I hope that gives you a bit of an idea what to work on; I reckon you could make a really good DnB track once this issue is adressed.
Another tip I want to give you: Keep the overal (master) volume level under -6db, to avoid clipping.
Hope I helped!