Luke, why is it linked to % of GDP ? Surely should reverse the psychology and agree what great public services need in hard cash, then add it all up and that's what GDP needs to be.
If that is unachievable then need to cut costs (not raise taxes !)
With Labour you can have 120% but it might well be 120% of fuck all, but don't worry state handouts will keep you in the basics.
With Reform you can have 90% of something if you work for it.
Think I'd go for the 90% of something..