In the Scotland Act 1998 it is clear that the constitution is a reserved matter.

The applicant then made it clear that they intended to submit reserved matters planning applications for the four individual phases for the development.

The reserved matters continue to be controversial in some quarters and there are certain conflicts or anomalies.

And here is the underlying reason why the union is a reserved matter.

One such reserved matter was taxation; however, this had been a key point in Scottish negotiations relating to parliamentary control.

The constitution is item one in a schedule of reserved matters in the Scotland Act.

The main reserved matters are the areas of diplomacy, international treaties, defence and security.

Westminster will retain control for policy in "reserved matters".

Scotland would need to pay a per capita contribution for reserved matters, such as defence and diplomacy.

"Foreign affairs is a reserved matter," the spokesman said.