The purpose of legislation on this subject is to protect individuals and businesses from the laws of other states where they purport to have effect outside the country where the laws are made.  Provisions under such legislation may prohibit certain actions in the UK in compliance with objectionable foreign laws.  For example, legislation may prevent the enforcement in the UK of foreign judgements or provide remedies in UK courts for persons adversely affected by the application abroad of objectionable foreign laws.
In addition, the protection of the UK’s economic interests from the actions of Governments or persons resident outside the UK is reserved.
Court procedure, judicial remedies and the reciprocal enforcement of foreign judgements generally is not reserved.
TABLE OF RESERVED MATTERS Head C: Trade and Industry General