5.—(1) Any decision of the Department under Article 9 or 11 of the 1998 Order(1) (“the original decision”) may be revised by the Department if—
(a)the Department commences action leading to the revision within one month of the date of notification of the original decision; or
(b)an application for a revision is received by the Department at an appropriate office within—
(i)one month of the date of notification of the original decision (but subject to regulation 38(4) (correction of accidental errors)),
(ii)14 days of the expiry of that period if a written statement of the reasons for the decision is requested under regulation 7 (consideration of revision before appeal) or 50 (notice of a decision against which an appeal lies) and that statement is provided within the period specified in head (i),
(iii)14 days of the date on which that statement was provided if the statement was requested within the period specified in head (i) but was provided after the expiry of that period, or
(iv)such longer period as may be allowed under regulation 6 (late application for a revision).
(2) Paragraph (1) does not apply—
(a)in respect of a relevant change of circumstances which occurred since the decision had effect or, in the case of an advance award under regulation 31, 32 or 33 of the Claims and Payments Regulations, since the decision was made;
(b)where the Department has information or evidence which indicates that a relevant change of circumstances will occur;
(c)in respect of a decision which relates to an employment and support allowance or personal independence payment where the claimant is terminally ill, unless the application for a revision contains an express statement that the claimant is terminally ill.
Article 9 was amended by paragraph 16 of Schedule 6 to the Social Security Contributions (Transfer of Functions, etc.) (Northern Ireland) Order 1999, Part VII of Schedule 13 to the Welfare Reform and Pensions Act 1999, Schedule 6 to the Tax Credits Act 2002, paragraph 6 of Schedule 1 to the State Pension Credit Act (Northern Ireland) 2002, paragraph 10(3) of Schedule 3 to the Welfare Reform Act (Northern Ireland) 2007 and is amended by paragraph 36 of Schedule 2 and paragraph 37 of Schedule 9 to the Welfare Reform (Northern Ireland) Order 2015 and Article 11 was amended by paragraph 17 of Schedule 6 to the Social Security Contributions (Transfer of Functions, etc.) (Northern Ireland) Order 1999.