The reserved matters are:
Originally enacted in emergency powers legislation in September 1939, the 1939 Act is now part of the body of legislation governing controls over trade.  It also includes certain provisions relating to trading with the enemy, also a reserved matter under Defence at paragraph 9(1)(e) of Part I of Schedule 5.
Responsibility for operating import and export controls lies primarily with the Secretary of State for Trade and Industry.  The control over imports is comprehensive but most types of goods are released from control by an open general import licence.  But, particular controls are applied under the Act on, at present, imports of: certain steel and textile products from certain countries; certain other non-textile products from China; firearms and ammunition; radioactive materials; goods falling within the scope of the chemical weapons convention; and goods from areas subject to comprehensive UN sanctions.
The prohibition and regulation of the import and export of endangered species is also reserved because animals and plants do not otherwise fall within the controls on “goods”. The basis for current law at a British and EC level is the Convention on International Trade in Endangered Species (CITES), although the Regulations which give effect to CITES at the EC and UK levels in some respects go beyond the Convention’s requirements and involve ancillary controls e.g. over advertising or transport for sale. The great majority of species to which CITES applies are exotic, but some are indigenous to the UK, e.g. the golden eagle.
TABLE OF RESERVED MATTERS Head C: Trade and Industry Details of Provisions