Not sure if you're still looking for this but the track being mixed in at 21:00 and playing at 22:50 on side a is the same track. It's Dave Charlesworth - Energizer 2
Dave Charlesworth - Energizer 2
10:00 is M-D-Emm - Get Down (Hardcore Ravers Mix) and he mixes over it with The 45 King - The 900 number (YZ Acapella vocal) played at 45 rpm.
45 King, The - The 900 Number EP