(1) The Parts set out in Schedule 2 are substituted for Parts 1 to 3 of Schedule 4 (as amended by sections 4 and 16(1) of the Act of 2006) to the Principal Act.

(2) This section comes into operation -

(a) in so far as it relates to jobseeker's allowance, pre-retirement allowance and farm assist, on 27 December 2006,

(b) in so far as it relates to supplementary welfare allowance, on 1 January 2007,

(c) in so far as it relates to disability allowance, on 3 January 2007,

(d) in so far as it relates to one-parent family payment (other than where payable in respect of a widow or widower), carer's allowance and a payment referred to in paragraph (b) or (c) of the definition of "relevant payment" in section 178 of the Principal Act, on 4 January 2007, and

(e) in so far as it relates to State pension (non-contributory), blind pension, widow's (non-contributory) pension, widower's (non-contributory) pension, one-parent family payment payable in respect of a widow or widower and guardian's payment (non-contributory), on 5 January 2007.