It's a version of Brent Dowe's 'Babylon Policy' - it's damn heavy, it's damn good. I Roy is close to his best, playful and lyrically inventive, and he's right at the front of the mix.
There are a lot of deejay tunes that you enjoy because they have a great mix (that just happens to include some toasting), with this one you don't really notice the mix until you turn the record over. The dub is seriously heavy with a subtle echo on the guitar, piano and vocal that gives it dreamy feel with a firm focus on the drums, percussion and bass.
It took me years to find this one - hope you enjoy.