Nexus is actually one of the three tunes recently released on a very cool casette, the so called "cassingle" (the label is This Thing). Nexus is accompanied by lo-fidelity Roland sketches "Q3" and "Pale Blue" on the B-side.
Harvey Sutherland is in fact better known as Mike Kay - a synth nerd, producer, keyboardist, DJ and boogie enthusiast.
His excellent Low Altitude has been given a 12" re-release via good some good folks at Peoples Potential Unlimited (still available, just hit their webstore). Modern boogie at it's best, the title track is a funky 808 driven dance floor filler. You can stream it below: