Ammaco freestyle frame - knew it from the first pic because of the headtube gusset cut outs. I'm sure Stephen Laidlaw used to ride one of these, '86 or '87, something like that. Bought one of these frames for a mate,Davy C0ckerill, in early '90s for £15 - bike shop was throwin' it in a skip! Got him back into bmx and he rode it for a good while 'til he bought a Condor. Not a bad piece of kit and light too if I remember.