Found this one out on Youtube.
This was produced by an old family friend who was the older brother to an old school mate of mine.
It was knocked up in his bedroom with 2 SL1200 decks and whatever recording equipment was around in the 80's. I believe he later went on to work for Telstar records.
If you compare it to the original there's quite a bit extra going on......
'How do they Do That?' 
I always tried to get copies but he would not release them as you had to subscribe to Music Factory which was only for Club DJ's.
I did manage to get a few cassette copies of this and some of his other releases, which I have since lost.