Liquid glucose in marshmallows What does liquid glucose do for a marshmallow?

Has anyone replaced liquid glucose with golden syrup or any other syrup for that matter?  

What are the effects of using alternatives for marshmallows?

I see a lot of American recipes have corn syrup as a ready alternative but this is not widely available in the UK.
Glucose is used to supersaturate the refined sugar. Without it, the refined sugar would crystallize after some time. We don't want our marshmallow to be like that.