In paragraph 10 (which confers power to make regulations about the manner in which weekly income is to be determined), for sub-paragraph (2) substitute—

“(2)

The regulations may, in particular—

(a)

provide for determination in prescribed circumstances by reference to income of a prescribed description in a prescribed past period;

(b)

provide for the F1Secretary of State to estimate any income or make an assumption as to any fact where, in F2Secretary of State's view, the information at F2Secretary of State's disposal is unreliable or insufficient, or relates to an atypical period in the life of the non-resident parent.”