Not a chance guys, why would and business want to cut their potential customers by limiting your domain to a smaller customer base. Anyone that does go for a medioca .sco name will lose a good proportion of their visitors to the .co.uk ext by misunderstandings.
Obviously the top names like mortgage will go, but it will have no depth to it and won't trouble to .co.uk
The brand has been established in a geographical monopoly for over 12 years, that won't be broke now.