This seems a slightly odd twist on history. Scotland was never a trading post, dominion, colony, protectorate, mandate or any other such system subject to the English/British crown. When Elizabeth 1st died her heir was King James V1th of Scotland who became James 1st of England/James V1th of Scotland, creating a regal but not parliamentary, union. Parliamentary Union came in 1707 with the Formal Act of Union which, when Ireland was eventually included created the United Kingdom of Great Britain and Ireland (bit potted). The British Empire was all the overseas territories claimed in ther name of the Sovereign of this entity during the following years. I honestly do not think any professional historian (nor a nationalistic Scot curently demanding independence!) would refer to Scotland as just a part of the British Empire on a par with the British Raj, the Seychelles or Aden and as there is a Scotland Board it seems to me it is more likely to produce help.