For the purposes of this Act "qualifying non-UK pension scheme" means a pension scheme (other than a registered pension scheme) which—
"Pension scheme" has the same meaning as in Part 4 of the Finance Act 2004 (see section 150 of that Act).
Regulations under this section may include provision having effect in relation to times before the regulations are made if it does not increase any person's liability to tax.
The power to make regulations under this section is exercisable by statutory instrument, which is subject to annulment in pursuance of a resolution of the House of Commons.