I should've bought this when it had a £50 BIN a couple of days ago!
I would say it's a Falcon Pro. One of the Flyer range but I'm not sure which. Possibly an Aero Flyer.
If you have a look at my Falcon Pro Aero Flyer, you'll see it's a dead ringer, even down to the positioning of the holes on the head tube for the missing badge. Even the frame number starting with 'G' is right for a Falcon Pro.
I'd say it's early 80's rather than late 80's as he suggests.
That said, I could be completely wrong!
Giles