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@Scilly.Suffolk
The Shimano BB you were using, would equate to 119mm ISO. An 8mm gap between the ring and the chainstay sounds about right, if you should have been using 111mm or 113.5mm.
If you are riding this SS (rather than as a double), then this complicates things slightly. You'll want to move the chainring inboard to the same position that the spider would occupy with the "correct" BB: something like 1.5/2.0mm.
Assuming you have "new" cranks, then the correct BB is 113.5mm, so a 111mm one should work.
This is handy as Campag used 111mm for all doubles from C-Record, right through to Ultra Torque (except Record and Chorus which went to 102mm from 1995), so they are plentiful and relatively cheap.
If 111m isn't enough, then the next one down is 109mm which was used by Triomphe/Victory and Record Pista: not so readily available but about the same price (apart from Pista obviously).
If 109mm is too much then some BB spacers from Velosolo will allow you to tweak the chainline.
What sort of freewheel are you using: screw-on or a converted freehub?