It's good, but
I really like it, it's got some great foundations in it.
Only thing is, it's VERY circular. I know, DnB is by its very essence circular. But great DnB tweaks it. Adding in slightly different things to the mix. Making the central riff and bass develop. Whacking in just random things every other bar. Build it up and then take it in a different direction.
I just felt like you had the skeleton and the sinews and organs and circulatory system going. But hadn't really hung much meat or flesh on the proverbial body.
It's really got a good basis. But change it up a bit, tweak the beats, distort the bass. Make it sound like you've not quite reached the peak of the song, keep the listener wondering where you're going to take it next. At the moment it just sonds like it's a bit like a beginning build and then BAM! Here's the peak. Nothing else left to really do except repeat it.