The South Africa (Prohibited Exports and Transactions) (Overseas Territories) Order 1978
Whereas under Article 41 of the Charter of the United Nations the Security Council of the United Nations have, by a resolution adopted on 4th November 1977, called upon Her Majesty's Government in the United Kingdom and all other Members of the United Nations to apply certain measures to give effect to a decision of that Council in relation to the Republic of South Africa:

Now, therefore, Her Majesty, in exercise of the powers conferred on Her by section 1 of the United Nations Act 1946(a), ...