I live in Scotland and would like to know how to protect it from the winter months
Certified GKH Gardening Expert
Did you mean Cordyline australis "Verde"?
It looks like you are just barely in their growing range. As long as you offer protection by mulching a little extra, or wrapping, lightly, in burlap when the temperatures fall below 2c it should survive the winter with very little damage.
Here is an article that will help you with the care of Cordylines: