(1) In the case of a person who has no means as determined by this Chapter and subject to a payment under section 198, the weekly amount of supplementary welfare allowance payable shall be as set out in column (2) at reference 10(a) of Part 1 of Schedule 4 (as inserted by section 11 (b) of the Social Welfare and Pensions Act 2009), increased by -

(a) the amount set out in column (3) of that Part for any period during which the claimant or beneficiary has a qualified adult subject to the restriction that the claimant or beneficiary shall not be entitled for the same period to an increase of allowance under this paragraph in respect of more than one person, and

(b) the appropriate amount set out -

(i) in column (4) of that Part in respect of each qualified child who has not attained the age of 12 years, and