Paragraph 19
The Commissioners may by regulations amend any of the following provisions by substituting a different amount for the amount for the time being specified there—
paragraph 2(2) (requirement that relevant sum is a minimum amount);
paragraph 4(6) and (8) (threshold for safeguarded amount);
paragraph 14(3) or (4) (level of penalties).
The Commissioners may by regulations amend any of the following provisions by substituting a different period for the period for the time being specified there—
paragraph 3(4) (time limit for complying with information notices);
paragraph 6(2) (time limit for complying with hold notices);
paragraph 8(3) or (5) (time limit for notifying HMRC of effects of hold notice);
paragraph 9(3) (cancellation etc of hold notice: time limit for cancelling or adjusting arrangements);
paragraph 10(5) (time limit for making objections);
paragraph 11(1) (time limit for consideration of objections);
paragraph 11(6) (consideration of objections: time limit for cancelling or adjusting arrangements);
paragraph 12(8) (appeals: time limit for compliance with court order).