Very smooth
Could do a bit more with the bass add occasional delay/obvious reverb changes/maybe even chorus, just so it's not so out of the way.
I think the breakdown at the end could use some more work, but I like the final transition.
The drums feel like they could use some more work, I almost feel clickier, less metallic hats fitting there. If you insist on the metallic hats you have currently, make sure that the dynamics always cause the hats to sound symmetric, it just sounds like the hi-hats aren't creating the movement they usually do in dnb.
Very well put together song, great atmosphere, and bass motif, with some really good polish, will listen again, but the drums here are suffering the same stagnation that most of my drum n bass stuff does. I think what the pros do that we don't is very heavy LPF/HPF, adept use of flanger, and very heavily worked on note velocities.
5'd, 8/10'd :)