Entitlement before the date of claim in renewal cases

4.  Where—

(a) a person has been entitled to an attendance allowance;

(b) the period for which that allowance has been paid has ended; and

(c) a claim for an attendance allowance has been made or treated as made within 6 months from the end of the period referred to in paragraph (b),

that person may be entitled to an attendance allowance for a period before the date of claim if he has satisfied the condition mentioned in paragraph (a) of section 35(1) or the condition mentioned in paragraph (b) of that subsection or both of those conditions, from the date on which the period referred to in paragraph (b) has ended until the date of claim.