Northern Ireland generally takes responsibility for its own pensions legislation. That will continue under the Northern Ireland Assembly. Section 90(3) extends the stakeholder pension provisions of the Act to England, Scotland and Wales only. Corresponding provisions for Northern Ireland will then be made under Northern Ireland legislation.
The two sets of legislation are likely to be similar. It should therefore be simple for schemes to register (with OPRA) under both sets of legislation if they should wish to do so.
Commentary on Sections Northern Ireland stakeholder pension scheme legislation